The settings config file for Quad-views is about the best settings i've managed to dial-in when using Eye-tracking with the Pimax Crystal and PimaxXR/OpenXR-Toolkit/Quadviews
Install OpenXR Toolkit, Pimax XR, and then Quad-views, from: https://github.com/mbucchia/Quad-Views-Foveated/wiki
Follow the instructions precisely by mbuccia.
Unzip and place the cfg file as is in C:\Users\<YOUR PROFILE>\AppData\Local\Quad-Views-Foveated\
(you will need to make the "Quad-Views-Foveated" folder if it doesn't exist)
This will give you an eye tracked Dynamic Foveated Focus region that is a box 35% x 35% of your FOV centered upon whatever your pupils are pointing at.
Inside of the focus region, you'll get 200% super-sampling, and outside of that region everything will be rendered at 9% normal resolution (although you cannot see that)
I recommend using this with a Pixel Density of 1, and the Crystal running at native resolution.
