# 4K Quick Sync Transcoding Buffering - Core Ultra 265K **URL:** \ **Category:** Plex Media Server\ **Tags:** server-linux, plex-web, player-mac\ **Created:** [February 17, 2025, 6:38pm UTC](https://forums.plex.tv/t/4k-quick-sync-transcoding-buffering-core-ultra-265k/905913 "2025-02-17T18:38:48Z")\ **Posts on this page:** 20\ **Page:** 1
**Author:** ![seion](https://avatars.discourse-cdn.com/v4/letter/s/858c86/32.png) [@seion](https://forums.plex.tv/u/seion)\ **Post date:** [February 17, 2025, 6:38pm UTC](https://forums.plex.tv/t/4k-quick-sync-transcoding-buffering-core-ultra-265k/905913/1 "2025-02-17T18:38:49Z")
Server Version#: 1.41.4.9463 Web Player Version#: 4.143.0 MacOS Client Player Version#: 1.103.1.238-223cbba6 Hardware: CPU: Core Ultra 7 - 265K Motherboard: MAG Z890 TOMAHAWK WIFI (Updated to latest BIOS) Memory: 93GB Storage: SAS3 ZPool Setup OS: Debian Trixie (Updated to latest packages and kernel) I need help troubleshooting or tweaking settings or understanding if this is not going to work. My issue is that 4K content is buffering during transcoding playback. It is using HW Accel of the CPU (Quick Sync) Web Player starts off in direct play and switches to 1080p HW Transcoding, it will play for a minute and then buffer and then play for 30 seconds to 90 seconds or so and buffer, and will keep doing this. MacOS Client direct plays, but if I force transcoding 1080p it buffers like every 30 seconds to 60 seconds. Tested Files: 2x [Remux-2160p][DV\_HDR10][TrueHD\_Atmos-7.1][HEVC] 1x [Remux-2160p][HDR10][TrueHD\_Atmos-7.1][HEVC] Network: Testing is on LAN, hardwired iperf: ```auto [ID] Interval Transfer Bitrate Retr [5] 0.00-10.00 sec 2.74 GBytes 2.35 Gbits/sec 1011 sender [5] 0.00-10.00 sec 2.74 GBytes 2.35 Gbits/sec receiver ``` Podman Quadlet: ```auto [Unit] Description=Plex Media Server [Container] Image=lscr.io/linuxserver/plex:latest AutoUpdate=registry Environment=TZ=America/New_York User=1000:1000 #UserNS=keep-id GroupAdd=keep-groups ShmSize=8gb Network=host # Config volumes Volume=plex-transcode:/transcode Volume=/media/alpha:/media/alpha Volume=/media/beta:/media/beta Volume=/opt/plex:/config # Add video device AddDevice=/dev/dri:/dev/dri [Install] # Start by default on boot WantedBy=default.target ``` Trascoding Settings Plex: - Transcoder Quality = `Automatic` - Transcoder Temporary Directory = `/dev/shm` - Transcoder Default Throttle Buffer = `60` - Background transcoding x264 preset = `medium` - Enable HRD tone mapping = `true` - Tonemapping Algorithm = `hable` - disable video stream transcoding = `false` - Use hardware acceleration when available = `true` - Use hardware-accelerated video encoding = `true` - Enable HEVC video encoding (experimental) = Tried both true and false - Hardware transcoding device = `Intel Arrow Lake-U [Intel Graphics]` - Maximum Simultaneous video transcode = `unlimited` ---
**Author:** ![ChuckPa](https://sea1.discourse-cdn.com/plex/user_avatar/forums.plex.tv/chuckpa/32/79710_2.png) [@ChuckPa](https://forums.plex.tv/u/ChuckPa)\ **Post date:** [February 17, 2025, 7:05pm UTC](https://forums.plex.tv/t/4k-quick-sync-transcoding-buffering-core-ultra-265k/905913/2 "2025-02-17T19:05:27Z")
You are using UID:GID = 1000:1000 in the container. Look at the GID which owns the nodes in /dev/dri (renderD128) Make certain to add UID 1000 to that group Example: ```auto [chuck@lizum ~.2001]$ ls -la /dev/dri total 0 drwxr-xr-x 3 root root 160 Feb 14 00:10 ./ drwxr-xr-x 22 root root 5860 Feb 15 12:59 ../ drwxr-xr-x 2 root root 140 Feb 17 12:20 by-path/ crw-rw----+ 1 root render 226, 0 Feb 14 18:04 card0 crw-rw----+ 1 root render 226, 1 Feb 14 18:04 card1 crw-rw----+ 1 root render 226, 2 Feb 17 12:20 card2 crw-rw----+ 1 root render 226, 128 Feb 14 18:04 renderD128 crw-rw----+ 1 root render 226, 129 Feb 14 18:04 renderD129 [chuck@lizum ~.2002]$ sudo usermod -aG render chuck [chuck@lizum ~.2003]$ ``` Log-out/in to make it effective for the active login session. Also confirm you’re on a kernel newer than 6.8 (Proper ArrowLake support) ---
**Author:** ![seion](https://avatars.discourse-cdn.com/v4/letter/s/858c86/32.png) [@seion](https://forums.plex.tv/u/seion)\ **Post date:** [February 17, 2025, 7:24pm UTC](https://forums.plex.tv/t/4k-quick-sync-transcoding-buffering-core-ultra-265k/905913/3 "2025-02-17T19:24:39Z")
I don’t think the issue is that its not using quick sync, because before when I was having issues with it not using HW Accel, it would show on my CPU usage, when its using HW accel now there is almost no CPU usage. It also has the (hw) in the dashboard. ```auto ➜ ~ uname -srm Linux 6.12.12-amd64 x86_64 ``` ```auto ➜ ~ ls -la /dev/dri total 0 drwxr-xr-x 3 root root 100 Feb 17 17:32 . drwxr-xr-x 21 root root 5080 Feb 17 17:56 .. drwxr-xr-x 2 root root 80 Feb 17 17:32 by-path crw-rw---- 1 root video 226, 0 Feb 17 17:56 card0 crw-rw---- 1 root render 226, 128 Feb 17 17:32 renderD128 ➜ ~ id uid=1000(seion) gid=1000(seion) groups=1000(seion),24(cdrom),25(floppy),29(audio),30(dip),44(video),46(plugdev),100(users),101(netdev),993(render),994(kvm),1002(media) ``` ---
**Author:** ![ChuckPa](https://sea1.discourse-cdn.com/plex/user_avatar/forums.plex.tv/chuckpa/32/79710_2.png) [@ChuckPa](https://forums.plex.tv/u/ChuckPa)\ **Post date:** [February 17, 2025, 8:13pm UTC](https://forums.plex.tv/t/4k-quick-sync-transcoding-buffering-core-ultra-265k/905913/4 "2025-02-17T20:13:08Z")
please do the following: 1. Verify server [DEBUG logging](https://support.plex.tv/articles/201643703-reporting-issues-with-plex-media-server/#toc-1) is enabled – Settings - [server] - General - Show Advanced – SAVE if changed 2. Restart PMS 3. Wait 30-60 seconds after start 4. Start Playback of an item which requires transcoding and exhibits ‘buffering’ 5. Play 20 seconds 6. Stop Playback 7. Settings - Server - Troubleshooting - Download Logs 8. Attach the ZIP file it gives you with your next reply ---
**Author:** ![seion](https://avatars.discourse-cdn.com/v4/letter/s/858c86/32.png) [@seion](https://forums.plex.tv/u/seion)\ **Post date:** [February 17, 2025, 8:29pm UTC](https://forums.plex.tv/t/4k-quick-sync-transcoding-buffering-core-ultra-265k/905913/5 "2025-02-17T20:29:23Z")
_ **MOD edit** _ **_Attached logs downloaded and removed_** Let me know after you downloaded the attached log ---
**Author:** ![ChuckPa](https://sea1.discourse-cdn.com/plex/user_avatar/forums.plex.tv/chuckpa/32/79710_2.png) [@ChuckPa](https://forums.plex.tv/u/ChuckPa)\ **Post date:** [February 17, 2025, 8:56pm UTC](https://forums.plex.tv/t/4k-quick-sync-transcoding-buffering-core-ultra-265k/905913/6 "2025-02-17T20:56:23Z")
Thank you for the logs. The CPU and transcode are 100% correct. Looking deeper into the logs, I see a couple networking hits. The network is “flopping” (adapter reset) ```auto Feb 17, 2025 15:27:25.609 [140009167956792] DEBUG - [Req#3d4/Transcode/m2u4x8zt4emd8jdam5d14rb8] Asked for segment 533 from session. Feb 17, 2025 15:27:26.045 [140009138191160] DEBUG - NetworkInterface: received Netlink message len=68, type=RTM_NEWLINK, flags=0x0 Feb 17, 2025 15:27:26.045 [140009138191160] DEBUG - NetworkInterface: Netlink information message family=0, type=1, index=4, flags=0x1003, change=0x0 Feb 17, 2025 15:27:26.045 [140009138191160] DEBUG - Network change. Feb 17, 2025 15:27:26.045 [140009138191160] DEBUG - NetworkInterface: Notified of network changed (force=0) Feb 17, 2025 15:27:26.045 [140009138191160] DEBUG - Network change notification but nothing changed. Feb 17, 2025 15:27:26.794 [140009136081720] DEBUG - [Req#3d1/Transcode/m2u4x8zt4emd8jdam5d14rb8/3ea6a036-f89a-4a60-bd22-98c3c8e105fa] Transcoder segment range: 443 - 533 (533) Feb 17, 2025 15:27:26.811 [140009167956792] DEBUG - [Req#3d4/Transcode/m2u4x8zt4emd8jdam5d14rb8] Returning segment 533 from session Feb 17, 2025 15:27:26.812 [140009167956792] DEBUG - Content-Length of /dev/shm/Transcode/Sessions/plex-transcode-m2u4x8zt4emd8jdam5d14rb8-3ea6a036-f89a-4a60-bd22-98c3c8e105fa/init-stream0.m4s,/dev/shm/Transcode/Sessions/plex-transcode-m2u4x8zt4emd8jdam5d14rb8-3ea6a036-f89a-4a60-bd22-98c3c8e105fa/chunk-stream0-00534.m4s is 3388725 (of total: 3388725). Feb 17, 2025 15:27:26.821 [140009185299256] DEBUG - Completed: [10.0.0.75:57772] 200 GET /video/:/transcode/universal/session/m2u4x8zt4emd8jdam5d14rb8/0/533.m4s (6 live) #3d4 TLS GZIP 1212ms 3388725 bytes (pipelined: 93) Feb 17, 2025 15:27:26.839 [140009046788920] DEBUG - Request: [10.0.0.75:57772 (Subnet)] GET /video/:/transcode/universal/session/m2u4x8zt4emd8jdam5d14rb8/0/534.m4s (6 live) #3d9 TLS GZIP Signed-in Feb 17, 2025 15:27:26.839 [140009046788920] DEBUG - [Req#3d9/Transcode/m2u4x8zt4emd8jdam5d14rb8] Asked for segment 534 from session. Feb 17, 2025 15:27:26.851 [140009087564600] DEBUG - [Req#3d3/Transcode/m2u4x8zt4emd8jdam5d14rb8] Returning segment 533 from session Feb 17, 2025 15:27:26.851 [140009087564600] DEBUG - Content-Length of /dev/shm/Transcode/Sessions/plex-transcode-m2u4x8zt4emd8jdam5d14rb8-3ea6a036-f89a-4a60-bd22-98c3c8e105fa/init-stream1.m4s,/dev/shm/Transcode/Sessions/plex-transcode-m2u4x8zt4emd8jdam5d14rb8-3ea6a036-f89a-4a60-bd22-98c3c8e105fa/chunk-stream1-00534.m4s is 32409 (of total: 32409). Feb 17, 2025 15:27:26.851 [140009187408696] DEBUG - Completed: [10.0.0.75:57767] 200 GET /video/:/transcode/universal/session/m2u4x8zt4emd8jdam5d14rb8/1/533.m4s (6 live) #3d3 TLS GZIP 1302ms 32409 bytes (pipelined: 100) Feb 17, 2025 15:27:26.855 [140009167956792] DEBUG - Request: [10.0.0.75:57767 (Subnet)] GET /video/:/transcode/universal/session/m2u4x8zt4emd8jdam5d14rb8/1/534.m4s (6 live) #3db TLS GZIP Signed-in Feb 17, 2025 15:27:26.855 [140009167956792] DEBUG - [Req#3db/Transcode/m2u4x8zt4emd8jdam5d14rb8] Asked for segment 534 from session. ``` The IP didn’t change but something else caused it to reset . This will make PMS reset connections. The segment of the log I posted shows the retransmit request occurring at 433 and 434 (it asked for 434 twice) Does the server have a static IP address? ---
**Author:** ![seion](https://avatars.discourse-cdn.com/v4/letter/s/858c86/32.png) [@seion](https://forums.plex.tv/u/seion)\ **Post date:** [February 17, 2025, 10:39pm UTC](https://forums.plex.tv/t/4k-quick-sync-transcoding-buffering-core-ultra-265k/905913/7 "2025-02-17T22:39:41Z")
![Screenshot 2025-02-17 at 5.37.44 PM](https://global.discourse-cdn.com/plex/original/4X/e/5/d/e5d6d133ea5042c2356ce507748e2830a2b104c9.png) I have it set in my Unifi Gateway as a fixed IP I was having another issue that I posted on discord about. " I have 2 linux servers One of them is running my original plex server @ x.x.x.3 One of them is running my new plex server @ x.x.x.4 When I go to x.x.x.4:32400 it lets me login and if the plex service was just started, I can see the server and its config. I can also see x.x.x.3 plex also. If later in the day I check back and go to x.x.x.4:32400 I can still login but it only shows the x.x.x.3 server and not the x.x.x.4 server. But if I restart the x.x.x.4 plex service it shows back up. " I will be turning down the 10.0.0.3 eventually for this new server ---
**Author:** ![ChuckPa](https://sea1.discourse-cdn.com/plex/user_avatar/forums.plex.tv/chuckpa/32/79710_2.png) [@ChuckPa](https://forums.plex.tv/u/ChuckPa)\ **Post date:** [February 17, 2025, 10:45pm UTC](https://forums.plex.tv/t/4k-quick-sync-transcoding-buffering-core-ultra-265k/905913/8 "2025-02-17T22:45:41Z")
DHCP reservations (which you show me here) have a duration. In your Unify settings, what is the DHCP address duration ? The default should be 86400 seconds. It can be set to longer periods if desired. ---
**Author:** ![seion](https://avatars.discourse-cdn.com/v4/letter/s/858c86/32.png) [@seion](https://forums.plex.tv/u/seion)\ **Post date:** [February 17, 2025, 11:04pm UTC](https://forums.plex.tv/t/4k-quick-sync-transcoding-buffering-core-ultra-265k/905913/9 "2025-02-17T23:04:52Z")
![IMG_1342](https://global.discourse-cdn.com/plex/original/4X/1/0/d/10dbe512498cc1a99e71f5cf422ac428b8a2d019.jpeg) ---
**Author:** ![ChuckPa](https://sea1.discourse-cdn.com/plex/user_avatar/forums.plex.tv/chuckpa/32/79710_2.png) [@ChuckPa](https://forums.plex.tv/u/ChuckPa)\ **Post date:** [February 17, 2025, 11:44pm UTC](https://forums.plex.tv/t/4k-quick-sync-transcoding-buffering-core-ultra-265k/905913/10 "2025-02-17T23:44:10Z")
You mentioned WiFi when you shared the spec for your server. You showed wired performance stats. Of those stats from iperf, I am VERY concerned. 1011 retries ? My server’s iperf stats (entire network wired with static IP) ```auto [chuck@lizum media.2007]$ iperf3 -c 192.168.0.20 -R Connecting to host 192.168.0.20, port 5201 Reverse mode, remote host 192.168.0.20 is sending [5] local 192.168.0.13 port 33786 connected to 192.168.0.20 port 5201 [ID] Interval Transfer Bitrate [5] 0.00-1.00 sec 1.09 GBytes 9.39 Gbits/sec [5] 1.00-2.00 sec 1.10 GBytes 9.41 Gbits/sec [5] 2.00-3.00 sec 1.10 GBytes 9.41 Gbits/sec [5] 3.00-4.00 sec 1.10 GBytes 9.41 Gbits/sec [5] 4.00-5.00 sec 1.09 GBytes 9.40 Gbits/sec [5] 5.00-6.00 sec 1.10 GBytes 9.41 Gbits/sec [5] 6.00-7.00 sec 1.10 GBytes 9.41 Gbits/sec [5] 7.00-8.00 sec 1.10 GBytes 9.41 Gbits/sec [5] 8.00-9.00 sec 1.10 GBytes 9.41 Gbits/sec [5] 9.00-10.00 sec 1.10 GBytes 9.41 Gbits/sec - - - - - - - - - - - - - - - - - - - - - - - - - [ID] Interval Transfer Bitrate Retr [5] 0.00-10.00 sec 11.0 GBytes 9.41 Gbits/sec 0 sender [5] 0.00-10.00 sec 11.0 GBytes 9.41 Gbits/sec receiver iperf Done. [chuck@lizum media.2008]$ ``` Is the server on WiFi or wired ? I am asking this because I’m trying to determine if the problem is the server or the player. At this time, I don’t have any definitive data for either way. The [server logs](https://support.plex.tv/articles/200250417-plex-media-server-log-files/) don’t appear to be a problem other than having caught the server during DHCP refresh ---
**Author:** ![seion](https://avatars.discourse-cdn.com/v4/letter/s/858c86/32.png) [@seion](https://forums.plex.tv/u/seion)\ **Post date:** [February 17, 2025, 11:51pm UTC](https://forums.plex.tv/t/4k-quick-sync-transcoding-buffering-core-ultra-265k/905913/11 "2025-02-17T23:51:09Z")
I’ll do some network troubleshooting tonight or tomorrow and report back. Thanks for the help so far. ---
**Author:** ![seion](https://avatars.discourse-cdn.com/v4/letter/s/858c86/32.png) [@seion](https://forums.plex.tv/u/seion)\ **Post date:** [February 18, 2025, 1:22am UTC](https://forums.plex.tv/t/4k-quick-sync-transcoding-buffering-core-ultra-265k/905913/12 "2025-02-18T01:22:45Z")
So my laptop that I ran iperf from in the first post might of been on Wifi. But if I do a iperf between the old server and new server (both hardwired) there is no retries. ```auto ➜ ~ iperf3 -c 10.0.0.3 Connecting to host 10.0.0.3, port 5201 [5] local 10.0.0.4 port 51712 connected to 10.0.0.3 port 5201 [ID] Interval Transfer Bitrate Retr Cwnd [5] 0.00-1.00 sec 284 MBytes 2.38 Gbits/sec 0 880 KBytes [5] 1.00-2.00 sec 281 MBytes 2.36 Gbits/sec 0 880 KBytes [5] 2.00-3.00 sec 280 MBytes 2.35 Gbits/sec 0 971 KBytes [5] 3.00-4.00 sec 281 MBytes 2.36 Gbits/sec 0 1022 KBytes [5] 4.00-5.00 sec 281 MBytes 2.36 Gbits/sec 0 1022 KBytes [5] 5.00-6.00 sec 281 MBytes 2.35 Gbits/sec 0 1022 KBytes [5] 6.00-7.00 sec 280 MBytes 2.35 Gbits/sec 0 1022 KBytes [5] 7.00-8.00 sec 281 MBytes 2.36 Gbits/sec 0 1022 KBytes [5] 8.00-9.00 sec 280 MBytes 2.35 Gbits/sec 0 1022 KBytes [5] 9.00-10.00 sec 281 MBytes 2.35 Gbits/sec 0 1022 KBytes - - - - - - - - - - - - - - - - - - - - - - - - - [ID] Interval Transfer Bitrate Retr [5] 0.00-10.00 sec 2.75 GBytes 2.36 Gbits/sec 0 sender [5] 0.00-10.00 sec 2.74 GBytes 2.36 Gbits/sec receiver ``` ---
**Author:** ![seion](https://avatars.discourse-cdn.com/v4/letter/s/858c86/32.png) [@seion](https://forums.plex.tv/u/seion)\ **Post date:** [February 18, 2025, 12:46pm UTC](https://forums.plex.tv/t/4k-quick-sync-transcoding-buffering-core-ultra-265k/905913/13 "2025-02-18T12:46:53Z")
I guess I need to figure out why this is happening… ```auto Feb 18, 2025 07:45:09.001 [140485858085688] DEBUG - NetworkInterface: received Netlink message len=68, type=RTM_NEWLINK, flags=0x0 Feb 18, 2025 07:45:09.001 [140485858085688] DEBUG - NetworkInterface: Netlink information message family=0, type=1, index=4, flags=0x1003, change=0x0 Feb 18, 2025 07:45:09.001 [140485858085688] DEBUG - Network change. Feb 18, 2025 07:45:09.001 [140485858085688] DEBUG - NetworkInterface: Notified of network changed (force=0) Feb 18, 2025 07:45:09.001 [140485858085688] DEBUG - Network change notification but nothing changed. Feb 18, 2025 07:45:37.996 [140485858085688] DEBUG - NetworkInterface: received Netlink message len=68, type=RTM_NEWLINK, flags=0x0 Feb 18, 2025 07:45:37.996 [140485858085688] DEBUG - NetworkInterface: Netlink information message family=0, type=1, index=4, flags=0x1003, change=0x0 Feb 18, 2025 07:45:37.996 [140485858085688] DEBUG - Network change. Feb 18, 2025 07:45:37.996 [140485858085688] DEBUG - NetworkInterface: Notified of network changed (force=0) Feb 18, 2025 07:45:37.997 [140485858085688] DEBUG - Network change notification but nothing changed. Feb 18, 2025 07:46:21.020 [140485858085688] DEBUG - NetworkInterface: received Netlink message len=68, type=RTM_NEWLINK, flags=0x0 Feb 18, 2025 07:46:21.020 [140485858085688] DEBUG - NetworkInterface: Netlink information message family=0, type=1, index=4, flags=0x1003, change=0x0 Feb 18, 2025 07:46:21.020 [140485858085688] DEBUG - Network change. Feb 18, 2025 07:46:21.020 [140485858085688] DEBUG - NetworkInterface: Notified of network changed (force=0) Feb 18, 2025 07:46:21.020 [140485858085688] DEBUG - Network change notification but nothing changed. ``` ---
**Author:** ![seion](https://avatars.discourse-cdn.com/v4/letter/s/858c86/32.png) [@seion](https://forums.plex.tv/u/seion)\ **Post date:** [February 18, 2025, 1:27pm UTC](https://forums.plex.tv/t/4k-quick-sync-transcoding-buffering-core-ultra-265k/905913/14 "2025-02-18T13:27:59Z")
Ok found some reddit posts with people with similar issues for the network change stuff. Only thing people figured out was that it was related to Docker using Network Host mode. So I switched the container to Bridged and no more Network Change in the logs so far. I tried a movie out again and its still doing the buffering issue. Does this mean it asked for the same segment 4 times? ```auto Feb 18, 2025 08:21:05.655 [140566770592568] DEBUG - [Req#2bf/Transcode/tikpg745vs5a8rsjm7apcl3d] Returning segment 578 from session Feb 18, 2025 08:21:05.655 [140566770592568] DEBUG - Content-Length of /dev/shm/Transcode/Sessions/plex-transcode-tikpg745vs5a8rsjm7apcl3d-ad8e332c-580f-46b7-9a02-b95e86e1ef31/init-stream0.m4s,/dev/shm/Transcode/Sessions/plex-transcode-tikpg745vs5a8rsjm7apcl3d-ad8e332c-580f-46b7-9a02-b95e86e1ef31/chunk-stream0-00579.m4s is 3989810 (of total: 3989810). Feb 18, 2025 08:21:05.666 [140566706359096] DEBUG - Request: [10.0.0.78:59220 (Subnet)] GET /video/:/transcode/universal/session/tikpg745vs5a8rsjm7apcl3d/1/579.m4s (8 live) #2c5 TLS GZIP Signed-in Feb 18, 2025 08:21:05.666 [140566706359096] DEBUG - [Req#2c5/Transcode/tikpg745vs5a8rsjm7apcl3d] Asked for segment 579 from session. Feb 18, 2025 08:21:05.821 [140566807636792] DEBUG - Completed: [10.0.0.78:59231] 200 GET /video/:/transcode/universal/session/tikpg745vs5a8rsjm7apcl3d/0/578.m4s (8 live) #2bf TLS GZIP 1168ms 3989810 bytes (pipelined: 53) Feb 18, 2025 08:21:05.901 [140566751386424] DEBUG - Request: [10.0.0.78:59231 (Subnet)] GET /video/:/transcode/universal/session/tikpg745vs5a8rsjm7apcl3d/0/579.m4s (8 live) #2c6 TLS GZIP Signed-in Feb 18, 2025 08:21:05.901 [140566751386424] DEBUG - [Req#2c6/Transcode/tikpg745vs5a8rsjm7apcl3d] Asked for segment 579 from session. Feb 18, 2025 08:21:06.340 [140566747015992] DEBUG - Request: [10.0.0.78:59270 (Subnet)] GET /statistics/bandwidth?timespan=6 (7 live) #2c1 TLS GZIP Signed-in Token (seion) (Firefox) Feb 18, 2025 08:21:06.342 [140566807636792] DEBUG - Completed: [10.0.0.78:59270] 200 GET /statistics/bandwidth?timespan=6 (7 live) #2c1 TLS GZIP 1ms 1487 bytes (pipelined: 53) Feb 18, 2025 08:21:06.870 [140566734326584] DEBUG - [Req#2c3/Transcode/tikpg745vs5a8rsjm7apcl3d/ad8e332c-580f-46b7-9a02-b95e86e1ef31] Transcoder segment range: 532 - 579 (579) Feb 18, 2025 08:21:06.903 [140566751386424] DEBUG - [Req#2c6/Transcode/tikpg745vs5a8rsjm7apcl3d] Returning segment 579 from session Feb 18, 2025 08:21:06.903 [140566751386424] DEBUG - Content-Length of /dev/shm/Transcode/Sessions/plex-transcode-tikpg745vs5a8rsjm7apcl3d-ad8e332c-580f-46b7-9a02-b95e86e1ef31/init-stream0.m4s,/dev/shm/Transcode/Sessions/plex-transcode-tikpg745vs5a8rsjm7apcl3d-ad8e332c-580f-46b7-9a02-b95e86e1ef31/chunk-stream0-00580.m4s is 4248096 (of total: 4248096). Feb 18, 2025 08:21:06.969 [140566706359096] DEBUG - [Req#2c5/Transcode/tikpg745vs5a8rsjm7apcl3d] Returning segment 579 from session Feb 18, 2025 08:21:06.969 [140566706359096] DEBUG - Content-Length of /dev/shm/Transcode/Sessions/plex-transcode-tikpg745vs5a8rsjm7apcl3d-ad8e332c-580f-46b7-9a02-b95e86e1ef31/init-stream1.m4s,/dev/shm/Transcode/Sessions/plex-transcode-tikpg745vs5a8rsjm7apcl3d-ad8e332c-580f-46b7-9a02-b95e86e1ef31/chunk-stream1-00580.m4s is 31534 (of total: 31534). Feb 18, 2025 08:21:06.969 [140566805527352] DEBUG - Completed: [10.0.0.78:59220] 200 GET /video/:/transcode/universal/session/tikpg745vs5a8rsjm7apcl3d/1/579.m4s (7 live) #2c5 TLS GZIP 1303ms 31534 bytes (pipelined: 69) ``` ---
**Author:** ![seion](https://avatars.discourse-cdn.com/v4/letter/s/858c86/32.png) [@seion](https://forums.plex.tv/u/seion)\ **Post date:** [February 18, 2025, 1:46pm UTC](https://forums.plex.tv/t/4k-quick-sync-transcoding-buffering-core-ultra-265k/905913/15 "2025-02-18T13:46:58Z")
So I disabled Tone Mapping and it went from buffering every 30to60 seconds to maybe every 2 or 3 minutes… ---
**Author:** ![seion](https://avatars.discourse-cdn.com/v4/letter/s/858c86/32.png) [@seion](https://forums.plex.tv/u/seion)\ **Post date:** [February 18, 2025, 1:58pm UTC](https://forums.plex.tv/t/4k-quick-sync-transcoding-buffering-core-ultra-265k/905913/16 "2025-02-18T13:58:09Z")
![Screenshot 2025-02-18 at 8.57.45 AM](https://global.discourse-cdn.com/plex/original/4X/7/7/0/7703947addad7e5fe37f810496f8b06f137a0b9c.png) The above screenshot is one 4k Video transcoding to 1080p. It says Intel Meteorlake though not arrow lake, might be an issue with the intel-gpu-top software though. ---
**Author:** ![ChuckPa](https://sea1.discourse-cdn.com/plex/user_avatar/forums.plex.tv/chuckpa/32/79710_2.png) [@ChuckPa](https://forums.plex.tv/u/ChuckPa)\ **Post date:** [February 19, 2025, 2:12am UTC](https://forums.plex.tv/t/4k-quick-sync-transcoding-buffering-core-ultra-265k/905913/17 "2025-02-19T02:12:18Z")
I hope I’m not showing bias but Docker gives me hives. The native public package is always updated the same time docker image is. With native package, you have the freedom to use beta and revert easily I find docker to be “too much tinfoil”. Yes, it has its place — Use it when there is no native package for a distro Perhaps you can consider native and be done with it? Native package = “Host mode” … less the tinfoil. ---
**Author:** ![seion](https://avatars.discourse-cdn.com/v4/letter/s/858c86/32.png) [@seion](https://forums.plex.tv/u/seion)\ **Post date:** [February 19, 2025, 2:27am UTC](https://forums.plex.tv/t/4k-quick-sync-transcoding-buffering-core-ultra-265k/905913/18 "2025-02-19T02:27:51Z")
I was thinking about trying native today. I will try it out tomorrow and report back. I am also investigating if the following is supposed to be using the xe driver if there is one and if because it’s using i915 that maybe it’s not working as well as it should. ➜ ~ lspci -knn … 00:02.0 VGA compatible controller [0300]: Intel Corporation Arrow Lake-S [Intel Graphics] [8086:7d67] (rev 06) DeviceName: Onboard - Video Subsystem: Micro-Star International Co., Ltd. [MSI] Device [1462:7e32] Kernel driver in use: i915 Kernel modules: i915, xe … ---
**Author:** ![ChuckPa](https://sea1.discourse-cdn.com/plex/user_avatar/forums.plex.tv/chuckpa/32/79710_2.png) [@ChuckPa](https://forums.plex.tv/u/ChuckPa)\ **Post date:** [February 19, 2025, 2:35am UTC](https://forums.plex.tv/t/4k-quick-sync-transcoding-buffering-core-ultra-265k/905913/19 "2025-02-19T02:35:15Z")
You need the i915 to get to the xe gpu just as you would to get to the (old) i965 gpu. Given you’re in docker, you have to make certain the group membership ID inside the container is such that it aligns with the GID of /dev/dri on the real host -OR- the assigned UID is a member of the group which owns /dev/dri * * * With the native package, I take care of all the udev rules for GPU access ( I put ‘plex’ in the group ; video or render or whatever it might be – except root) Regarding ‘root’ group. If your /dev/dri is owned by root GROUP, that’s a problem. udev rules should exist to remap it to a non-privileged group. (Root group is too dangerous to use for non-system applications) With the native package, you can change the UID/GID as you wish but now you’re back to docker-style , with one exception. When you write an override.conf (config customization), I read that at package installation and adjust group memberships as needed. I do my best to reduce installation and configuration to minimal user loading. ---
**Author:** ![ChuckPa](https://sea1.discourse-cdn.com/plex/user_avatar/forums.plex.tv/chuckpa/32/79710_2.png) [@ChuckPa](https://forums.plex.tv/u/ChuckPa)\ **Post date:** [February 19, 2025, 2:42am UTC](https://forums.plex.tv/t/4k-quick-sync-transcoding-buffering-core-ultra-265k/905913/20 "2025-02-19T02:42:19Z")
For reference, here’s what you can do > [@Linux Tips](https://forums.plex.tv/t/linux-tips/276247/3): > > Customizing your Plex configuration on systemd based systems This information is intended for those systems where cat /proc/1/comm returns systemd. On systems which use Systemd (Ubuntu 16+, Fedora 26+, Centos 7+, Debian 8+,) you create this customization file which SystemD reads prior to launching PMS. This file is independent of the default configuration and service control mechanisms in /lib/systemd/system/plexmediaserver.service. Your customization override is preserved across updates, un… [Next page](https://forums.plex.tv/t/4k-quick-sync-transcoding-buffering-core-ultra-265k/905913.md?page=2)