I think there are 2 different hardware IDs for PS4 controllers. My PID was different, but the VID was the same. By just putting in the VID and not the PID, it worked. (I’m sure I could have locked it to just that version of the controller with the correct PID from the hardware manager, too.)
I ended up with 0.5 but not using “Gamepad Stick”, like the answer said.