[vetinari]

When you run whatever OS inside a VM, chances are that they are not using any GPU you have available in the host (unless you spent your time with making vfio work). Instead, they are using emulated graphics, which isn't exactly high performance with any guest os.

Anyway, the important thing to achieve performance inside VM is storage, not graphics. If your VM is stored inside a file on the host filesystem, it is going to be way slower compared to VM using dedicated partition, lv or physical disk passed through. The effect is the same, as using classic HDD vs SSD in your host.