I’ve been 100% linux for my daily home computing for over a year now… With one exception… To be honest I didn’t even try particularly hard to make gaming work under Linux.
Instead I have a Windows VM - setup with full passthrough access to my GPU and it’s own NVME - just for Windows gaming. To my mind now it’s in the same category as running console emulation.
As soon as I click shutdown in windows, it pops me straight back into my Linux desktop.
Single GPU with scripts that run before and after the VM is active to unload the GPU driver modules from the kernel.
I think this was my starting point and I had to do just a few small tweaks to get it right for my setup - i.e. unload and reload the precise set of kernel modules that block GPU passthrough on my machine.
https://gitlab.com/Karuri/vfio
At this point from a user experience p.o.v it’s not much different to dual booting, just with a different boot sequence. The main advantage though is that I can have the Windows OS on a small virtual harddrive for ease of backup/clone/restore and have game installs on a dedicated NVME that doesn’t need backing up