[FNV] Issue with Mo2 and USVFS

Hi, so I recently decided I wanted to open up my FNV Mod List again. It's got about about 300 mods. I haven't touched any of the mods since my last playthrough, and it worked perfectly fine then. When I tried to open the game it kept alt tabbing into a program that kept constantly opening and closing called USVFS, I understand this is part of MO2, but I don't know why it's doing this and it makes the game unplayable. I have Special K installed which allows for the alt tabbing, but I'm assuming it has something to do with windows and MO2 not playing nice. Any advice on how to fix this?