I stubled upon this thread as I build al new system on AMD 8350 8 Core with Geforce 750TI. On my old system PE10 and 8 worked just fine.
I cannot roll back to the 320.49 as my GTX750TI is not supported
I tried the deletion of BadDrivers but that did not work for me.
Too bad a I like PE10 more than PE11, I am very reluctant to updrade to PE11.