Hello,
your Twitter told me to post this here.
So I work on an iMac Pro and when I open a document, it is often displayed very pixellated and I have to go to View > New View (often 2 or 3 times) until it becomes sharp.
I attached 2 screenshots of Artboard names, one before and one after.
I also realized that the first one is on zoom level 25% and the second one is 50%, but the displayed size is identical. So I think it is a problem with the retina resolution not displaying correctly at first.
Maybe important: I have a second screen that is not retina, where I put most of the Studio tools.