Pavlov's recently released Update 29 migrates the game to UE5 and OpenXR. As a result, it is now compatible with OpenXR Toolkit's eye-tracked foveated rendering feature. I experienced some visual glitches at first when running it in 'Performance + Narrow' modes, but changing them to 'Quality + Wide' and relaunching the game fully resolved them, even while doing things like aiming with one eye closed. Some experimenting might yield more performance gains without resurfacing the glitches.
Instructions for OpenXR Toolkit are contained in the link above and more comprehensively written up than I could do, but if there's interest I may make a separate post explaining the process and what I've experienced in which apps, just to have some more useful information available here. Don't expect massive performance gains, but as I'm running QP at max resolution on a 2080ti, I'm happy to take what I can get lol.
Also, this update added cross play with PSVR so lobbies are significantly more active. If you haven't been playing for a while, now's a good time to give it another shot!
I tried getting it to work with Contractors but alas it did not. You can get open xr toolkit to run by swapping over OVRplugin but eye tracking does not work (I still recommend this if u have performance issues). Starting Contractors with Open xr option enable eye tracking but the controls are all screwed up :/. Wish it worked.