Question / Help OBS lag on rec(pls help)

Your logs show very little issues with the recordings. Make sure you're using a program like VLC to playback your videos. Using the default windows media player will result in poor playback due to how it handles high framerate videos.

Some things to note though
- Run OBS as administrator. You did encounter some rendering lag in one of your recordings, and this should help avoid that.
- Do not record directly to .mp4. This container format requires closing metadata written at the end of recording, so if anything happens to interrupt the recording abruptly (such as a crash), then the entire recording will be corrupted. Record directly to .mkv or .flv instead. If you need .mp4 for editing purposes, then you can remux the recording afterward (either automatically via the advanced settings, or manually through the file menu).
 
According to the logs, your recording is perfect. Are you using VLC to play back your video?

Also, you are running two monitors at different refresh rates. Windows 10 currently has issues handling this (with a fix hopefully coming in the 2004 update). The only known workaround right now is to run all your monitors at the same refresh rate, preferably 60hz to match recording framerate.
 
That log file still does not have a recording attempt shown. You also still aren't running OBS as administrator, and you're running both your monitors at 75hz instead of 60hz.
 
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