I have a chrome extension installed that allows me to change the speed of any video I watch. Due to this, I can always see the speed of videos in the top left corner. I've noticed that any time a stream I'm watching lags or I fall too far behind live, Twitch will automatically change the speed of the stream from 1x to 1.03x speed. I believe this is a good idea and the change in speed is small enough to not affect the video. However, this speed change DOES affect the audio and in the case of music streams, it horribly detunes the audio. I don't think this speed change needs to be taken out but it needs to be implemented in a way that doesn't affect audio

Error 2000 in my experience has been due to the Anti-tracking software I use. This makes the stream crash and quit playing. You need to refresh to get the stream going again. Usually this will cause an ad to play as soon as it is refreshed but not always in my experience. Anti-tracking software does not prevent other streaming websites to run smoothly for me, only Twitch. On my latest Twitch watching stint, my Anti-tracking software shows 13 advertising trackers blocked, 3 site analytics trackers blocked, and 0 essential trackers blocked. My Anti-tracking software states that essential trackers are critical for website functionality. Twitch's website is not functioning correctly though my Anti-tracking software blocked ZERO essential trackers. This makes no sense. The error is not on my part, it is the fault of Twitch and needs to be fixed on their end. I could turn off tracking protection but I have it and use it for a reason, and I am keeping it on. The tracking protection I use does not cause any other website streaming to stop working correctly. This issue has been ongoing for years. Fix your streaming errors regarding Anti-tracking software.

I've noticed that Twitch seems to have a major garbage collection problem. I use Firefox (97.0.1 currently).

Granted, I currently have 5 streams open with 4 of them tiled on my TV, however, the memory usage can be seen in excess of 10 GB.

When I do manual garbage collection via about:memory?verbose, it can drop back down to about 2-3 GB total usage on the main process with 5 streams open.

This sort of memory bloat only happens when I use Twitch. Firefox reports that the memory is under control (less than 1 GB total) in about:performance, but it seems to only happen when Twitch is open.

Edit: To add to this, since I think it's related:

I am currently watching ironmouse for example. For some reason the entire UI seems to choke, as well as the video will stutter. It is completely random. It seems to happen on her stream most often and not really anyone else's that much.

This is more of a bug report rather than any sort of suggestion, but this seems like the most applicable place to post it.

I was running into error #3000 frequently when watching a particular VOD, and eventually realized that the errors were not occurring randomly, but at specific time stamps in the video. One solution was to disable my chrome browser's hardware acceleration, but that resulted in heavy tearing on the video no matter what my vsync and other related settings were set to. Eventually, I found the solution in the form of using chrome://flags to explicitly either

1) Disable Hardware acceleration on video Decode (no tearing, but slightly reduced performance) or
2) Chose ANGLE graphics backend - set to openGL (no tearing, no performance lost, optimal solution)

Based on this solution, I can safely say that the following VOD, on my set up with an NVIDIA RTX 2070 GPU on Win10, will always encounter an error #3000 at this timestamp: https://www.twitch.tv/videos/1187291672?t=3h55m42s when using D3D11. There are various other spots that cause it too, that's just the one I caught when I realized it was at a specific time in playback.

Hopefully you'll be able to reproduce the issue using that information, and maybe figure out /why/ it's happening to find a fix, if it's not something just specific to my environment.

Just a few moments ago, I switched streams and the playback window was an inch too big: There was a field of empty black space between the chat scroll and the player where there wasn't one before. Since I hadn't updated my browser or changed it or anything like that, and further hearing other users complain about it, I decided that Twitch must have rolled out some new feature that wasn't playing nice with me. Heading over to the support ticket page, and after scrolling through the numerous options of permitted support ticket topics I couldn't find anything even close to being about 'Hey your player broke', outside of specific App types I'm not using. It's not an extension either, since neither streamer used extensions.

Why are you not accepting bug reports about what must be the primary way users view content on Twitch? This seems like a tremendous oversight. If the thing is broken, let me tell you and ask for help!