How do I enable GPU acceleration on new Hyper-V virtual machines? (Can't use remoteFX)

Question

I've recently set up a Hyper-V virtual machine that runs Windows 10 Pro 64 Bit, the host OS is also running Windows 10 Pro 64 bit

I want the VM to be able to play games, I tried to play a game but it's painfully slow, and the textures failed to load

after researching the issue, I think what I need to do is enable GPU acceleration, my GPU is AMD Radeon RX 570 4 GBs

I can't use RemoteFX 3D Adapter because apparently Microsoft doesn't support it anymore, and since this is a newer VM I can't add it, and I can't find "Physical GPUs" option in Hyper-V settings, so what do I do to enable GPU Acceleration?

Edit: I also don't want the VM to have exclusive access to the GPU, I want both host OS and VM to be able to use it

Answer 1

By far this video is the best walkthrough of how to do exactly what you are looking to do.

https://www.youtube.com/watch?v=XLLcc29EZ_8

It basically use the following script as the meat of the process...

$vm = "MyVMsName"
Add-VMGpuPartitionAdapter -VMName $vm
Set-VMGpuPartitionAdapter -VMName $vm -MinPartitionVRAM 80000000 -MaxPartitionVRAM 100000000 -OptimalPartitionVRAM 100000000 -MinPartitionEncode 80000000 -MaxPartitionEncode 100000000 -OptimalPartitionEncode 100000000 -MinPartitionDecode 80000000 -MaxPartitionDecode 100000000 -OptimalPartitionDecode 100000000 -MinPartitionCompute 80000000 -MaxPartitionCompute 100000000 -OptimalPartitionCompute 100000000
Set-VM -GuestControlledCacheTypes $true -VMName $vm
Set-VM -LowMemoryMappedIoSpace 1Gb -VMName $vm
Set-VM -HighMemoryMappedIoSpace 32GB -VMName $vm

Put all the above in a ps1 (powershell) script file and run it as admin then your VM will be sharing the GPU with the host system.

Answer 2

Using Powershell:

1. start PowerShell as Administrator

2. run command: Get-VMRemoteFXPhysicalVideoAdapter

3. Enabled attribute set to False

note the name of the graphic card

4. run command: Enable-VMRemoteFXPhysicalVideoAdapter -Name “<graphic card name>”

Now try again and your virtual machine with RemoteFX adapter should be starting ok.

If you want to add new RemoteFX adapter, check out powershell command Add-VMRemoteFx3dVideoAdapter.

You can read more here

Answer 3

There is no way to do exactly what you are asking for. The closest you will get is to pass the GPU as a PCI passtgrough device and give the VM exclusive access to it.