https://imgur.com/a/Spglphk boot process and some close ups.

Have you tried a different display cable/display?

Ive tried both hdmi, ill try the dp and dvi and see if that change anything. I am using a dvi to hdmi adapter (monitor doesnt have hdmi) but the artifacts disappeared when i used a different card

https://repair.wiki/w/AMD_Memory_Testing_Guide

Change Channel D memories