Extreme lag on WiFi

[MyMediaAtHome 2]

Emby server and all mentioned devices worked great until a few days ago.

 

 

 

Remote client

- Streams perfect using cell phone data.

- When streaming over WiFi, 1 sec video, 2 sec buffering, 1 sec video, etc

- The connection and WiFi are working fine as xbox, Netflix, Disney+, etc work great. Even simultaneously.

- Worked great a few days ago. 

 

Lag occurs on Android app and windows 10 laptop using Chrome.

 

[rbjtech 5284]

Try reducing the playback bitrate on the Android App to 1 or 2 Mbps (as a test) - if it then plays ok, then it is probably trying to direct stream more bitrate than your wifi can currently deliver.

 

An AP/Router reboot probably would be useful, also worth checking on airtime channel contention to see if anybody else is using your chosen channel.

Edited April 18, 2020 by rbjtech

[MyMediaAtHome 2]

Will have to do that later as the person involved 'gone' now.

But the test we did gives good results.

 

WiFi speedtest

 

[Luke 42085]

Hi there, can we please look at an example? thanks.

[MyMediaAtHome 2]

That would be no problem, but how would I do that? Create an account for you?

[Luke 42085]

How to report a media playback issue. Thanks.

[MyMediaAtHome 2]

enclosed

EmbyLog.zip

[rbjtech 5284]

Will have to do that later as the person involved 'gone' now.

But the test we did gives good results.

 

WiFi speedtest

 

 

Is that their speedtest or yours ?  Remember your UPLOAD is the max speed they can get as DOWNLOAD - and if this is your speedtest, 9 Mb/sec is not a large amount.   If the source media has a greater bitrate than 9 Mb/sec, then your server will need to transcode which may be where the issue is.    

[MyMediaAtHome 2]

That's their WiFi speed.
BTW the file with lag is a 720p .m4v file converted with Handbrake

[rbjtech 5284]

ok - so how is your upload speed and how does that compare to the bitrate of the file.  720p is likely only to be about 5-10 Mbps max, so this may not be the issue at all.

[MyMediaAtHome 2]

My upload is 30mbit

[ebr 16194]

My upload is 30mbit

 

As advertised by your ISP or actually tested over a long period of time?

 

The latency shown above is not great and will have a major impact on throughput ability as well.

[rbjtech 5284]

My upload is 30mbit

 

ok - did you try this suggestion ?

 

"Try reducing the playback bitrate on the Android App to 1 or 2 Mbps (as a test) - if it then plays ok, then it is probably trying to direct stream more bitrate than your wifi can currently deliver."

 

if this plays ok - then it's almost certainly a network throughput issue.  Keep ramping up the bitrate until you hit an issue - this is then the true sustained throughput of your upload - it could be capped or throttled due to the current global situation ?