UPS is reading zero but FPS is ~300

Im having a similar issue, using NVIDIA drivers with a GTX 960 for host and an AMD RX 570 for the guest my fps is ~300 but my UPS is 0.
Any idea what might be the cause of this?
EDIT: using bleeding edge build btw
EDIT 2: using B1 didnt solve the issue

Then you have zero updates coming from the guest. If you are on the desktop there is nothing changing and as such there are zero updates. Run something and see what happens.

Also, this is not a similar issue as this is regards to “Two Sessions” at once, not a singular session.