unrelated - You have audio devices at different sampling rates - you should fix that
As for video - just to confirm everything is 1080p, right?
Available Video Adapters:
17:30:13.006: Adapter 0: NVIDIA Quadro T1000 with Max-Q Design
17:30:13.006: output 0: pos={0, 0}, size={1920, 1080}, attached=true, refresh=60, name=
17:30:13.413: video settings reset:
17:30:13.413: base resolution: 1920x1080
17:30:13.413: output resolution: 1920x1080
No, desktop mgmt software playing 'games' with desktop (ie virtual desktop or similar)?
Is this a case of you simply (accidently) having resized the capture windows display, so you just need to Right Click on Source = Display Capture, and Transform -> Reset ?
When working with Source, be aware of difference between
- selecting from corner and keeping aspect ratio intact vs side which will change aspect ratio
vs
- using ALT-key to enable cropping a source window
for details see
https://obsproject.com/wiki/Sources-Guide
Sorry if that is way too basic, but I'm uncertain of your expertise level, so starting with the simple/basic stuff