Ok first off sorry if there's some other person who had this issue who posted earlier but I'm going insane trying to find a solution to this lol. What's happening is what's described in the title: in-game, my game runs fine but after I save to mkv the video file saves a single frame and then freezes for the duration of the video. This happens even after ending every single app task that isn't the game and OBS as well so I'm pretty sure it's not my computer being overloaded.
Log link: https://obsproject.com/logs/hMFne39B7q2oSXnE
Log link: https://obsproject.com/logs/hMFne39B7q2oSXnE