Tutorial: How to softmod to ANY VGPU you want without hardmods! (1.3~1.6v or more)

[error8]

Have you thought about a bad HS mount?

If 1 VRM is not touching the HS with the same pressure as the other and that one overheats you will get artifacts.

I would double check the VRM and GPU HS mounts and thermal paste.

I've reinstalled and applied thermal paste a long time ago. I'm sure that it is mounted properly.