I’ve had the same results with Grey v3 in my Form 1+. Along with other issues with the printer not being able to print at the finer resolutions.
Nevertheless I followed support’s instructions of cleaning all the mirrors but nothing helped.
However I can still print with the older grey or the clearr just fine. My assertion that the new resins like the Grey v3 were not fully vetted for the older machines was dismissed summarily by Formlabs, but I still believe I’m right. Yes, they perfunctorily test the resins by printing their basic test print, but they don’t take printer/laser age or wear in consideration.
To make things worse, they no longer offer the older resin, and this will only get worse going forth.