I posted the same question minutes later than you. My post has background details: https://forum.parallels.com/threads...phics-hardware-support-for-os-x-guest.329340/
Well, hate to say this, but PD 11 looks like rushed to release. I am deeply regretting to have purchased PD 11. Currently I am using VMWares Technical Preview for Fusion. Amazingly fast and the preview is free to use till the end of the year. For now it will do for old customer projects.