Everytime i play a game using my Geforce 840m graphics i experience weird glitches. The game starts going crazy with spikes everywhere on the screen. Also when i open Geforce Experience i see coloured pixels scattered on the window. This happened first when i was playing The Sims 4 and suddenly i started seeing spikes everywhere on the screen. With the Sims 4 it happens only when i run the game using 840m as when i use integrated graphics it works fine. I already tried uninstalling the Drivers and installing them again. I also formatted my laptop but still the problem is there. Anyone know how i can fix it?