If I understood the video correctly that was a dual-socket Xeon system, though, and there was considerable stuttering visible from time to time even if average framerates were decent.
I read the Reddit post; that looks easier to set up than I thought. I might give it a try some day. But I don't mind rebooting to switch OS anyway (10s boot times plus fast legacy BIOS).
Read more https://www.reddit.com/r/pcmasterrace/comments/2z0evz/gpu_pa...