I run Paradiddle in forced OpenVR in Steam VR mode. The same issue happens in any other mode. The issue is that when I try to move the drum kit or the notes highway thingy in the game, I can only move them by moving my controller around, but using the thumbstick or anything else on my controller doesn't do anything else. Like, change the height of the drum kit, change the angle of the notes highway/track, etc. And I assume this is a bug, but it could be just that Knuckles support isn't really implemented.