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 (144 and 60), so you are affected by this limitation.
To fix this issue, we recommend updating to the Windows 10 May 2020 Update (if available). Follow
these instructions if you're not sure how to update. It is also recommended per
https://obsproject.com/blog/five-simple-tips-for-new-streamers . If you do not want to update, set both monitors to the same refresh rate or disconnect a monitor.
2. Update your GeForce drivers also per that link.
3. I'm not sure if this performance related but 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:
44100 Hz
Headset Earphone (HyperX 7.1 Audio):
48000 Hz
Microphone (USB Audio CODEC ):
44100 Hz