It sucks, but as someone who hosts their own services and supports business clients: If they have a budget, Office365 all the way. Does it suck paying money to M$? Oh hell yeah. But it's a 'cost of doing business'. Don't screw around if they can afford it, just go O365 :(
I've passed through my GPU for acceleration purposes which has worked pretty well. I don't see a passed-through GPU in your screenshot. I'll assume you turned on the correct IOMMU and SR-IOV settings, added the PCI:E hardware to that VM, and made sure it showed up inside the guest OS?