Windowed borderless. Zwift is installed to a SSD, though it looks like it’s saving the screenshots to my data storage HDD. Looks like that’s something that can’t be changed at the moment: How do I change the saved screenshots folder destination? - #2 by EricC
That’s very likely to be my issue, I’ll see if I can come up with a workaround to get those to save to the SSD. Maybe a symbolic link in place of the zwift folder on my data drive pointing to my SSD will work.