Open SteamVR settings, show the advanced tab and ensure Current OpenXR Runtime is currently set to SteamVR.thx for the advice.
And I had, and no stick drift there btw. VAM is ok but doesnt have much content without user scenes, which are half of the times broken or load 50 gigs into vram, with highly variable content quality. Overall i`d rather have simple but stable little game like this one over sandbox mod platform like VAM. Although 'this one' is barely a demo for now
edit. ok, so, editing thumbstick deadzone in steamVR did nothing, probably because when "VR mode" button is pressed it goes back to WMR and launches the game from there, no steam overlay present. Cant google a way to fight it. Oddly enough, in early demo of this game it was not the case.
I totally understand that VAM is a bit fiddly and the sandbox thing can get annoying. On the other hand there are some real great user scenes which also include story (don't remember the creators names). The sandbox thing allows to be creative and mix scenes with celebs for example. I totally love the scenes from Ispinox, PetaZwega, Virtamateur, Kittymocap and many more. Mix them with models from Vecterror or Bamair1984 and I'm sure you will enjoy the experience.
If you are looking for real gameplay try Wild Life or get the UEVR injector and play games like Beasts in the sun or Waifu Dreams in VR.