Frames dropped

Hey I've been playing samp for around 7 years and this is the first time this has ever happened. Basically samp has been working perfectly fine up until a week ago (I've changed nothing on my pc). As soon as I go into a server including my own the FPS drops dramatically and its more or less unplayable. I've re-installed san andreas & samp multiple times, updated drivers etc. I still have the problem and I can't find anything about it when I search these forums and ******. Any insight would be appreciated. Thank you.

Edit- Also when I play singleplayer/use map editor my FPS is perfectly fine.