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I've also received this from Parallels customer support, confirming that the issue is fixed with the latest release: "It appears that the...
Upgraded to 16.1.1 and the issue is fixed. Thank you BrandonM4 and of course the OP JoeDawson
thank you - my Parallels windows now works again. MBP 15" Mid 2015. Any idea what disabling Metal does performance wise?