I made a post a few days ago here to report an issue I had with Gmod freezing, and I thought I wouldn't be able to find the cause of my issue.
I was wrong.
For some god-forsaken reason, whenever I set my Framerate Limit to 60 or below (60 is the FPS cap of my TV,) my game freezes in borderless windowed mode but is still interactable, and freezes completely in fullscreen mode.
I have no idea why this is happening, but I thought I'd share my thoughts here.