Constant Buffering Even At Low Bandwidth

Yes! That is thankfully correct. It is back up. The “new” server has same name as the old one, so all the clients are a bit confused. But otherwise it seems to be up again.

The Preferences.xml file is much more verbose than previously. I am going to back it up then add the Vaapi command again.

I can address that a bit (or you can).

Settings - Authorized devices (upper left corner) -> Server (dropdown)

You can “X” (Remove) the old duplicate.

Then restart the players / apps

Thanks again. I truly appreciate all of your help.

I accidentally deleted the wrong server (i.e., the primary one). But that ended up being a good thing. At the moment, and hopefully going forward, I can stream 4 Mbps on my slower internet 8 Mbps on my faster access point.

Is there any way to set the remote speed to 6 Mbps? It jumps from 4 to 8 on mine, but I noticed you mentioned 6 above - which would be optimal.

@Mr_Roark

You can hand calculate the desired upload limit and apply it in Settings - Server - Networking.

6 Mbps video = 6144 Kbps
add audio ~= 256 Kbps (fair for AC3)

6400 Kb/sec * 1.2 (include overhead of TCP/IP) = 7680 Kb/sec upload

Give that a shot.

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Thanks! I will. Now that I have had a chance to test it on a better network, it appears there are two aspects of the problem.

First, I want to reiterate that you are right: WiFi has a hugely detrimental effect on the remote Plex connection. I can get consistent 12 Mbps on a wired connection at the remote connection, but only 4 Mbps, inconsistently, on a WiFi connection for the same network. If you (or anyone) has any tips on improving WiFi for Plex, I have a dd-wrt compatible router with lots of customization options.

Second, I am not able to smoothly (a) record a show and (b) watch it on WiFi during the recording. Think a football game that you start late. It will constantly buffer. I just tried it on a wired connection, and it seems to not buffer. I’m not clear on why the buffering issue while watching a recorded show would present solely in the WiFi connection – I was hoping it was transcoding or some other setting. I am posting in case anyone else has the issue.

Again, HUGE thanks to @ChuckPa for your help. Probably saved me from moving on from Plex.

To add one more detail.

On that CPU (Quad Core model: Intel Core i5-4570 ), depending on the bitrate and formatting, you may not be able to record (which runs the transcoder inbound) and transcode the outbound (again, media dependent)

On my CPUs (a bit newer) I can record and playback

Maybe something to consider down the road.

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Sorry, I don’t see that sequence (Settings>Sever>Network) in my settings. I must be missing something.

Click SHOW ADVANCED

EDIT – Remote Access - Show Advanced.

I am very sorrry.

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Got it. Thanks.

Apologies, follow up questions regarding real speeds between the server and client. I just did another iperf3 test and got pretty abysmal results:

Starting Test: protocol: TCP, 1 streams, 131072 byte blocks, omitting 0 seconds, 10 second test, tos 0
[ ID] Interval           Transfer     Bitrate         Retr  Cwnd
[  5]   0.00-1.00   sec   252 KBytes  2.06 Mbits/sec    0   96.4 KBytes       
[  5]   1.00-2.00   sec   395 KBytes  3.23 Mbits/sec    0    123 KBytes       
[  5]   2.00-3.00   sec   189 KBytes  1.55 Mbits/sec    0    132 KBytes       
[  5]   3.00-4.00   sec   189 KBytes  1.55 Mbits/sec    0    140 KBytes       
[  5]   4.00-5.00   sec   189 KBytes  1.55 Mbits/sec    0    149 KBytes       
[  5]   5.00-6.00   sec   189 KBytes  1.55 Mbits/sec    0    163 KBytes       
[  5]   6.00-7.00   sec   252 KBytes  2.06 Mbits/sec    0    195 KBytes       
[  5]   7.00-8.00   sec   252 KBytes  2.06 Mbits/sec    0    239 KBytes       
[  5]   8.00-9.00   sec   315 KBytes  2.58 Mbits/sec    0    297 KBytes       
[  5]   9.00-10.00  sec  0.00 Bytes  0.00 bits/sec   50    211 KBytes       
- - - - - - - - - - - - - - - - - - - - - - - - -
Test Complete. Summary Results:
[ ID] Interval           Transfer     Bitrate         Retr
[  5]   0.00-10.00  sec  2.17 MBytes  1.82 Mbits/sec   50             sender
[  5]   0.00-11.00  sec  1.51 MBytes  1.15 Mbits/sec                  receiver
CPU Utilization: local/sender 3.2% (0.9%u/2.3%s), remote/receiver 0.4% (0.1%u/0.3%s)
snd_tcp_congestion cubic
rcv_tcp_congestion cubic

This despite a wired connection for both server/client and the server connection speed at 430 Mbps/22 Mbps and the client at 20 Mbps/2 Mbps.

Is there any way to troubleshoot the reasons why, despite solid independent connections, the two are not coming together well?

Peering points (where the ISPs interconnect) is the problem in most cases.
It’s outside our control.

The best you can do is contact the ISP and notify them.

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