Ok, so on a different monitor plugged into HDMI directly, no Dock- No flickering?
Do you remember… You said, “I think it’s the dock…” And I said, “I think it is the graphics…”
Can’t say we did not test thoroughly to be sure. In fairness… Losing the Mouse, Keyboard and screen intermittently- the above really would have worked out better if it’s the graphics.
So, think it is the Dock?