Ask HN: Is it possible to get a graphically smooth Windows VM?

I've been trying with little avail to get a Windows 10 VM running on Windows 10 which isn't graphically jittery. I plan to use this VM to download random games without having to worry about potential malware. I've tried VBox, and native Hyper-V Manager, with the latter being slightly better, but still far from native performance. I expect some performance degradation, but I don't have a good grasp on what should be attainable. I have a Ryzen 5800X3D, and a decently powerful GPU, but it runs like the hardware is 15 years old. Looking for advice on what I can do here; I've tried following pretty much every guide on the first page of Google, which all recommend the same things: enable virtualization, increase #virtual cpus, decrease #virtual cpus, increase memory, change memory to fixed instead of dynamic, get rid of bloatware, defragment, etc.