Hyper-V would not be able to run Red Dead Redemption 2. VMware ESXi with a Win10 guest OS can.
[0]: https://lore.kernel.org/lkml/20200914112802.80611-1-wei.liu@...
And I can have running wsl2 session with RDR2 running.
as far as I can tell, enabling wsl2 (thus hyperV) did not slow down windows in any meaningful way I could find.
Enabling wsl2 enables Windows' "virtual machine platform", which Windows itself will then run on top of as a guest.
And yes RDR2 is running stable 100fps uwqhd at max settings on my machine under these conditions.