random audio desyncs while streaming

C

camma

New Member
Apparently, this happens from time to time on my streams: everything is perfect, and then out of nowhere the audio and video become out of sync by a few seconds.

I've never noticed it myself since I'm the one streaming, but a viewer recently pointed out that it's happened multiple times.


For example, at around 3:00:56 the audio starts to arrive early. You can hear the in-game door open before it opens on screen, and then I say "aight" before my mouth moves. Then at 3:50:52 you can see the audio has sped up and is even more out of sync. For the rest of the VOD, it fluctuates in speed and desyncs badly.

It seems to happen at multiple points across the VOD:
https://www.youtube.com/live/9mi67dEqtuU?si=liiCYOGHVr-toqxG&t=10856


link to the obs log file:
 
1. In Windows, we recommend that "Game Mode" be enable. Game Mode can be enabled via the Windows "Settings" app, under Gaming > Game Mode.
2. Audio buffering hit the maximum value. This can be an indicator of very high system load and may affect stream latency or cause individual audio sources to stop working. Keep an eye on CPU usage especially, and close any unnecessary programs.
Occasionally, this can be caused by incorrect device timestamps. Restart OBS to reset buffering.

Source affected (potential cause): Audio Output Capture 2
3. Your GPU is maxed out and OBS can't render scenes and encode frames fast enough (12.4% of the time). Running a game without vertical sync or a frame rate limiter will frequently cause performance issues with OBS because your GPU will be maxed out. OBS requires a little GPU to render your scene.

Enable Vsync or set a reasonable frame rate limit (120, 60, 30) that your GPU can handle without hitting 100% usage. Adjust your screen's refresh rate to match. Multipass, look-ahead and adaptive quantization in the output settings all use additional GPU. You can try disabling those.

If that's not enough you may also need to turn down some of the video quality options in the game. If you are experiencing issues in general while using OBS, your GPU may be overloaded for the settings you are trying to use.

Please check our guide for ideas why this may be happening, and steps you can take to correct it: GPU Overload Issues.
4. Display, Game and Window Capture Sources interfere with each other. Never put them in the same scene (both). Also 2 game capture sources interfere with each other (scene rec). You can use the same Game Capture for all your games. If you change games often, try out the hotkey mode, which lets you press a key to select your active game. If you play games in fullscreen, use 'Capture any fullscreen application' mode.
5. In many cases, wireless connections can cause issues because of their unstable nature. Streaming really requires a stable connection. Often wireless connections are fine, but if you have problems, such as 1.3% dropped frames, the first troubleshooting step would be to switch to wired. We highly recommend streaming on wired connections. I would also recommend enabling dynamic bitrate by going to Settings, Advanced and then Network.

Post new log if still having issue.
 
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