I am using single GPU VFIO passthrough and it's good enough to game on, especially if you also pin your CPU threads in the VM.
You will lose a little bit of performance but if you really need that extra power you can just switch to bare metal Windows using dual boot
If you don't want the full bloated Windows I can recommend that you check out ReviOS
That sounds genius. The new drive is a 2TB NVME and the old is a 1TB NVME so that is totally a possibility.
I am using single GPU VFIO passthrough and it's good enough to game on, especially if you also pin your CPU threads in the VM. You will lose a little bit of performance but if you really need that extra power you can just switch to bare metal Windows using dual boot
If you don't want the full bloated Windows I can recommend that you check out ReviOS