2642 frames 38.328 seconds 68.93 fps (14.51 ms/f) 15.451 fps variability

Hey everyone,
After updating my drivers recently my fps went from a consatnt 80-90 to complete unstable, going from 50 to 100 without even moving on a map.
My computer itself is a laptop and is pretty crappy but it used to be enough for me to play the game, and I don't understand how updating drivers would break things.

Windows 10 64Bit
Intel i5-3230M CPU @ 2.60GHz, 2601 MHz
Nvidia GeForce GT 650M
8GB RAM

I use Comanglia's stability cfg with toast options, m0re hud and a custom hitsound.

Any idea where this comes from/ how to help fix it?

tyty

e: More stuff

[code] 2642 frames 38.328 seconds 68.93 fps (14.51 ms/f) 15.451 fps variability[/code]
Driver version: 378.92
Temps: ~65°C idle / ~80°C in game