I'm surprised that people are having performance issues with this on PC.
The original Ori stuttered constantly on my PC while running around - and still does, while Ori 2 seems to mostly run smooth except for some dropped frames as it transitions to new areas - at least when targeting 60 FPS. EDIT: The PC is a Ryzen 1700X at 3.9GHz, paired with a GTX 1070 and running at 3440x1440.
The game still puts me to sleep though, just like the original. Not a fan of it at all.
Something of note is that they dropped DirectInput support for this release, so I'm stuck without a controller in the Game Pass version as it doesn't detect a DualShock 4.
I thought Microsoft had created a new API for UWP games which let them support DirectInput devices. If I recall correctly one of the Forza games was first to use it, so that they could support most existing wheels.
Try DS4Windows.