iMac 2011 oclp screen glitch

iMac 2011 oclp screen glitch

Hello guys, hope you can help me on this one. I have this 27” A1312 iMac from 2011 which i lost count of how many times I took it apart.

This time is running oclp with Monterey and a K3100 gpu card.

Im getting this glitch from time to time but the guy who sold me the card tested it before shipping.

Anyone of you has gone through this and been able to solve it?

Thanks!

Author: @ReceptionNo2581