Re: Long Time VirtualBox User
From my experience 3d is emulated and not passthrough for single GPU devices unless your system has more than one GPU then you should be able to passthrough the pcie device to the VM that needs it.
It's a shame that GPUs aren't overcommit capable for compute/memory like CPUs are right now. It might take a few years for that to happen.
So far I haven't seen the ability to share single GPU across multiple VMs yet.