Since upgrading to Sierra and the new Pascal driver, I noticed strange corruption on Messages depending on what GPU I'm using to display it on. On my Mac Pro 5,1 system, I have a Titan X (Maxwell) and regular Titan card in slots 1 and 2.
On the Titan X, Messages displays normally (contacts fuzzed to protect the innocent):
while on the regular Titan, Messages content area is corrupted:
Anyone else see this kind of behaviour before?