Hmm, here’s a thought I’ve never had (but might be obvious to others).
Could I run windows as a VM guest under Linux and play Fortnite in that (with good GPU performance)? I don’t mind their rootkit running on some dedicated VM - I’ll just consider it my Fortnite unikernel.
(I’m also ok with the host OS being Windows or MacOS).
The anti-cheat will be very unhappy when it performs a bunch of arcane heuristics and determines it’s running in a VM.
Why would that matter? Pretty sure running in a VM doesn't facilitate cheating.
Running a VM gives the parent the ability to read/write arbitrary memory without [even rootkit] anticheat being able to detect, which can facilitate cheating, and therefore can earn you bans. The whole point of the rootkit is that the game can confirm that you don’t have any way to read/write arbitrary memory.
Isn't Windows running under a hyper-v hypervisor these days anyway?
In practice, I'd settle for a peer Windows OS, like the WSL2 kernel, with the rootkit seperate from my main work one. Can I run two copies of Windows simultaneously as peers?
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Yes. https://wiki.archlinux.org/title/PCI_passthrough_via_OVMF
You basically let your guest OS use your GPU instead of the host.