4K Buffering issues XbX direct play

Plex Players Gaming Consoles
1

I’m trying to figure out why I have buffering issues while watching 4K content through my Xbox Series X. My gear:

  • TruNAS server (Xeon E3-1220 no GPU)
  • Netgear Nighthawk 7800 (direct network connection via Netgear Gigabit switch)
  • Xbox Series X
  • Denon AVR-S660H
  • LG OLED C1

The file I’m playing is an H265 mp4 4K Dolby Vision streaming at 20mbps. I’m getting intermittent buffering on every 4K file I play. I’m not quite sure where in my chain would be the weak link. Everything is direct play, so there’s no transcoding going on. I’m hoping someone can give me some insight on where or how to debug this issue.

2

Yep. Same here.

3

From doing a lot of research on this I’m starting to think that this is a Plex issue and has nothing to do with my setup. Lots of people saying that the Infuse player works fine for them with the same setups but the Plex player always chugs. Kind of wonder what I’m paying for at this point.

4

So I found out that there is a performance difference between the different 4K codecs. The files I have been having issues with have been Dolby Vision files. But I got hold of a HDR10 file of the same content and experienced exactly zero performance issues. Granted, the bit rates between the two files varied. The DV was at about 24mb/s while the HDR10 was around 15mb/s. I can’t discount that as a possible issue.

5

Same experience for me, very similar setup, just Marantz SR6015 and different router. Was all excited to see change log for v2.101.3 say “Fixed Playback for Dolby Vision Content”, but no improvement for me.

6

i try xbox playback every once in a while and it still struggles with 4k content.

is there any plans to fix this @Moussa ? or is it not possible? i can provide you with a server to test it on 100x of videos

7

I have the same issues with Dolby Vision content, but 4 HDR plays just fine. I have no issues with Dolby Vision content with my Roku TV plex app.

8

Would be worthwhile posting some sample files and logs for plex support to look at.

I presume everything in the chain is hard wired not WiFi ?

9

I’m getting the same with a 4K HDR REMUX / 7.1 TRUEHD. If I pause the video upon resuming it will stutter, buffer, audio will be out of sync etc. It’s fixed by just going back 5 secs on seek. Sometimes it happens by not doing anything. Really annoying Xbox can direct play truehd unlike my LG C9 plex app.

Also,has anyone noticed when you bring up the seek bar there’s a glitch, like a semi alpha layer of the bottom bar that covers half the screen?

10

Same here. Only Dolby Vision files have this issue. HDR10 with much higher bit rate doesn’t have this buffering issues.

11

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