My game is acting weird

Ever since the new update I’ve been getting a lot of FPS drops, randomly my Video Settings get reseted, Borderless Fullscreen mode is not working propperly and I only get like 10 fps with it so I have to go fullscreen, high ping on matches, randomly and regularly people freeze in place just to unfreeze after a couple of secconds (sucks in group fights game freezes and then u die).

At first I thought my PC was dying, but other games work swimmingly. All my drivers are up to date and all that stuff.

This game is literaly unplayable for me right now, Halp?

Edit: I just alt tabbed and when i got back to the game it went from Fullscreen to Windowed. I’ve never seen more incompetent incapable developers.