Head tracking (leaning front and back) is missing from pi max, but from recent days I’ve tried to find a way to get it work, I’ve come somewhat close, now I know that pseye can be used with a software namely ‘freetrack’ to capture back and front movements, but I’m clueless in making it work with the vr, so question is how does the vr and the games recognize it?,I mean head tracking works outside vr in another software but how do I intrigate it?..or if there’s a better way of doing same, I’d love to know
Your best bet is to try searching for a plugin/mod for steam vr that can use the pseye for movement tracking that way it will work with any steam vr game if you used freetrack it would be harder and more inconvenient.