iMac 2020 YouTube videos and Apple Music album previews turning green. Worst after 14.1 update.
A couple of hours after restart, youtube videos turn solid green. Can still hear sound, but then all other videos turn green, and itunes (apple music) album previews also turn green. Got much worst after 14 update. Have reset pram and smc 4 times. Apple support suggests reinstalling system OS fresh without wipe first, then I guess wipe after this. This computer has been nothing but trouble, and had to have the logic board replaced after 1 year. Has also been completely wiped 4 times. Have 32 GB of Other World Computing ram, and 4 externals plugged in. Also a dell monitor, but the green issues happen with it unplugged. Have run disc utility and scan with restart + D Any ideas? Thank you!
iMac 27″, macOS 12.5