So, since i upgraded to Windows 10 which i immediately regret, my fps has been unstable as ****.

My fps can go up to about 1000-1200 but it's not stable anymore. When I max it at 250, it goes 180-280. This is very annoying while playing.
It doesn't really matter what i max the fps at, cuz it will go over it and be unstable as **** anyway.

I had Windows 7 before and it used to be steady 250 working like a charm.

Any suggestions?

Thanks in advance