[CURRENT ISSUE] Camera spins too quickly

Hi, this is my first time asking a question here but at this point I really am desperate so I appreciate all the help I can get.

I've seen threads regarding the camera issue in both CAS and Build Mode where it spins too fast at the slightest movement but I've found nothing that helps me as the majority suggest something to do with reshade and I don't use that. 

I haven't played much recently so the last patch was probably the skin tones slider but I've also just bulk downloaded Snowy Escape, Eco Living and Nifty Knitting. I made an attempt to repair the files and I'm yet to entirely uninstall and reinstall the game as I'd like to avoid that.

This is not because of my mouse sensitivity and I do not use reshade. I did also disable my discord and origin overlay however nothing changed. I do use custom content and I attempted the 50/50 method in order to try and solve the problem. However, all I seemed to learn is that the game acts up when there are files in the mods folder (empty sub folders etc) despite there being no content in there (other than resource.cfg). I've got no idea how to fix this. [Sorry if that doesn't quite make sense, I can't understand it either.]

If there are any game files you need me to submit, I'd be happy to help. I'm desperate to find a way to fix this as gameplay is unbearable as the problem continues.

Thank you!