Just upgraded to Mac Sierra on a Mac Book Pro Retina 2013 and then to Parallels 12. Painfully slow to the point of unusable with CPU at 100% Any fixes for this please ?
Hi @WilliamG4, In order to investigate your case, we need to ask you to generate a Technical Data report. 0. Try to reproduce the issue (or at least try to perform as little activity as possible after the issue is reproduced). 1. Click on Parallels Desktop icon in top Mac menu > Help > Send Technical Data. 2. Wait for the Problem Report to be generated. 3. On the appeared Problem Report window please brief problem description (scenario) and enter your contact information (name and email address) - then click "Send Report". 4. Reply us back with 9-digit Problem Report ID.
I was working at home tonight without an external monitor. CPU usage is fine. I think that narrows down the problem. Please advise how to setup for external monitor if that is the problem.