The patch worked out for me 
Configuration
Hardware
Asus Strix B350,
16GB trident Z 3200mhz,
R7 1700,
GTX 1070 (GPU passthrough),
Radeon 7770 (Host GPU),
Software
I’m on Ubuntu 17.04 with kernel 4.13.7+ (with the npt patch linked in the forum post)
With npt=0 before, I could run games like overwatch and l4d2 at 150fps+, however PubG or any game with more cpu intensive workloads would stutter hard.
PubG Framerates
Before Patch:
npt=1, ~20fps
npt=0, ~60fps (But very hard stuttering, felt like ~30 honestly)
After Patch:
np1=1, ~70
As far as I can tell, this is pretty close to my baremetal stats. It just started working though so I haven’t given it much time to test, but I am very happy about this