With the Pico Neo 3 Link the controllers didn’t work in the game, you can see the laser beams from the controller laying on the ground and didn’t move at all. Also no controllers are seen.
To fix this issue first quit SteamVR and the Pico Link software, then open this Ini file with a text editor with Admin rights (or you can’t save it):
C:\Program Files (x86)\Pico Link\driver\bin\win64\RVRPlugin.ini
Search for [PICO] and directly under it you will find “controllertype=3”.
3 is the default setting, 0 is for the Pico controller, 1 for the Oculus Touch and 2 for the Vive Wands controller emulation.
Change it from 3 to 1 to emulate the Oculus Touch controllers.
Save the file and restart the Pico Link software and SteamVR. Now you will see inside VR the Oculus Touch controller 3D models. If so all is fine and you can play now RUINSMAGUS.