UPDATE!
Seems like they fixed the delay issue with the C920 in the recent 24.1 hotfix!!! Tested it out and we are indeed back to functioning! Be sure to delete the webcam source, unplug your cam, reset OBS, plug cam back in, open OBS, then create a new webcam source and wha-la, your C920 should now work on any resolution.
THANK YOU, DEV TEAM!