I had the same problem, try disabling the openXR plug-in and only use the LiveLinkXR plug-in. It looks like there’s an incompatibility with the two of plug-ins. I have it working with liveLink from maya (although for some reason it doesn’t work inside the virtualCameraPlayerController input source). I’m using SteamVR 1.14.16 and 4.26 Preview2.
