This minium reproduce demo is based on owt-client-javascript conference sample, mainly changed in index.js. The other changes is marked with comment @CHANGE.

owt-server: 5.0 release

owt-client-javascript: built with 5.0.x source

Chrome: 114.0.5735.199 (64 bit)

Windows: 10 (19044.3086)

You can just open index.html by VSCode's open in default browser plugin

Process:

1. subscribe mixed stream "common" and play.
2. publish mic audio, mix it into "common".
3. publish screen video, mix it into "common".

Expect: video plays smoothly.

Actual: video begins to lag after about 3s.

I notice that my system works well in Electron.js, so I guess whether this problem comes from chromium version.

I tests this demo in old version (103.0.5049.0) Chrome downloaded from here, and this problem disappears.

I hope someone can prove that this issue is a common problem and I also look forward to the root cause and permanent solution.