I was very happy to see "Mirror Resolution Changer" appear with an "Unlimited" mode in the options. It takes unlimited mode to handle the Pimax 8KX. Any other setting is blurry.
Unfortunately, it does not remember this setting the next time you launch VRChat. It remembers any other value you set it to (1/4x, 1/2x, etc), but not unlimited. Consequently, you have to manually set this again every time you launch VRChat including clicking through its silly warning dialog!
Please fix this bug in this new feature. And if it was done intentionally, please don't.