And it looks like Path of Greatest Resistance requires a DLC to be downloaded, and the game to be launched slightly differently, at which point the tracking actually kicks in.
It has its own calibration which makes the whole thing work a bit better.
So there is, I suppose, no extra steps that need to be taken. If there’s any further advice, please let me know. I’ll try this out with the trial a bit more and consider a purchase.
Thank you for your hard work!