Question Pixeling while gaming

Jul 18, 2020
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Hi am new here !! am a french canadian so give me a chance for my bad english ! So my graphic card is pixeling when i play a game its making black pixel that are gaining over the entire screen slowy and this graphics card was in my old pc my build is fresh from 3 weeks ago everything is new "but not the graphics card"

so yes am running an overclock BUT it does the same thing on stock clock so i don't know if its software related or hardware and its doing this only in one game : call of duty modern warfare

heres the specs
CPU I5 9600KF
GPU GTX 1060 6GB RUNNING TRIPLE SCREEN
RAM CORSAIR VENGANCE 2X16GB
PSU EVGA 750W

let me know is u need something else