Mouse glitching after obtaining new vehicle/camoflauge

I can play the game normally. But whenever I move my mouse, the fps drops down to somewhere between 0-15. I tried running it in administrator mode, but I get stuck on the launcher saying “checking for game updates.” My specs:

|Processor| Intel(R) Core™ i9-9900K CPU @ 3.60GHz 3.60 GHz|
|Installed RAM| 16.0 GB|
|System type| 64-bit operating system, x64-based processor|
Graphics Card: RTX 2060

I also have 10 fans installed.