this post was submitted on 11 Jun 2023
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i've had good success with this but ofc ymmv. it can be hard to get your windows vm performance tweaking right and it can take a buttload of time. if you want best mitigation of anti-cheat risk and best performance then you should continue to dual boot imo.
Do you do this to play games with anti cheat? I read that some games detect that. Are there ways around it?
depending on how you virtualize your windows install, yes, there are ways to kind of "spoof" your machine details (like manufacturer, desktop instead of vm) but again, it won't be fool-proof and it might take a lot of time to get working well. i definitely have not tested that many triple-a windows games with anti-cheat because that's just not my gamer wheelhouse, but so far after spoofing some of my machine details (spoofed as a baremetal oem install) i haven't had any issues.
What hypervisor are you using?
I use proxmox and run a couple windows VMs for Remote Desktop. I’ve passed through nvidia gpus and even at point had a nvidia grid setup running splitting up a P40 across multiple VMs.
The nvidia gpu’s require several config options to ‘spoof’ a real desktop and prevent the code 43 error but windows still identifies them as virtual machines. I’ve never found a way for trick windows itself into thinking it’s stand alone.
Its been a while since I've had any gpu's attached to a windows VM but I think my time pre dates the change. I realized they were not actually doing anything for my given workloads so I sold most of them. The P40 is setup in a VM for tensorflow now and one of these days Ill get the time to go back to that.
I have recently been playing with VMs in Unraid and in the video tutorials I've seen they talk about about grouping together (by editing xml file[1]) the video with audio that comes the GPU to avoid that error. Also about passing a modified BIOS. Are those the workarounds been talked about here?
[1] multifunction='on'
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for hypervisor i'm using libvirt+qemu. by doing this, a few lines in the .xml for the vm is all that is needed for me to enable some hyper-v feature flags to spoof to windows that it's not a vm. check to see if proxmox has some hyper-v features you can enable for this purpose.