Display Capture is the worst and should only be used as a last resort. Try building your scene using Window/Game/Video Device Captures.
1. If available via Windows Update, update to Windows 10 2004 per
https://obsproject.com/blog/five-simple-tips-for-new-streamers
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
Headphones (Galaxy Buds+ (8E58) Stereo):
44100 Hz
Headset (Galaxy Buds+ (8E58) Hands-Free AG Audio):
16000 Hz
3. Run OBS as admin.