Weird weird problem...

Ok, so after Update 73, I joined my friends server that Ive been playing on for god knows how long (Since I started gmod). I have all the addons he has to a tee. I joined his server after update and all of a sudden my view is like in the ground, but he sees perfectly fine and sees me fine. All the addons and items are all errors, all Players are invisible, Toolguns give me massive lag due to spam with yellow errors in console and right hand of screen.

I have:
Verified Game files twice, one without restarting Steam, one with.
Deleted my game files and restored back to bear-ass-minimum Garry’s Mod.

I dont know what else to do here, this is retarded.