WINDOWS STUFF
1. The version of Windows you are running (1909) has a limitation which causes performance issues in hardware accelerated applications (such as games and OBS) if multiple monitors with different refresh rates are present. Your system's monitors have 2 different refresh rates (120 and 60 Hz), so you are affected by this limitation.
To fix this issue, we recommend updating to at least the Windows 10 May 2020 Update. Follow
these instructions if you're not sure how to update.
2. At least one of your audio devices has a sample rate that doesn't match the rest. This can result in audio drift over time or sound distortion. Check your audio devices in Windows settings (both Playback and Recording) and ensure the Default Format (under Advanced) is consistent. 48000 Hz is recommended.
OBS Sample Rate:
48000 Hz
Speakers (Realtek High Definition Audio):
48000 Hz
Microphone (Voicemod Virtual Audio Device (WDM)):
48000 Hz
Microphone (HyperX Quadcast):
44100 Hz
3. In Windows 10 versions 1809 and newer, we recommend that "Game Mode" be enabled for maximum gaming performance. Game Mode can be enabled via the Windows 10 "Settings" app, under Gaming > Game Mode.
OBS STUFF
4. Uncheck the box for Psycho Visual Tuning. Change the streaming preset to Quality. If you have the bandwidth, just stream at 5000 and use the "use stream recorder" option for recording.
5. Display and Game Capture Sources interfere with each other. Never put them in the same scene (SE PC).
6. Multiple Game Capture sources are usually not needed, and can sometimes interfere with each other. 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.
7. Settings, Advanced, Network, enable Dynamic bitrate.
8. Record to MKV or FLV. If you record to MP4 or MOV and the recording is interrupted, the file will be corrupted and unrecoverable.
If you require MP4 files for some other purpose like editing, remux them afterwards by selecting File > Remux Recordings in the main OBS Studio window or enable auto remux in the advanced settings.
GAME STUFF
9. Cap your games at 120 FPS.