I could use some insight with a wheel related problem.
I got my T300 RS GT two days ago. I updated the Firmware and did all the basic calibration shenanigans. The first evening everything worked fine. Yesterday I went into a league race session, and the wheel was going bonkers. There was a constant fluctuating steering input movement registered by the game. My virtual wheel was going left and right even though the physical wheel was not moving. It happened while stationary, while moving, while on straights and while in corners. In the in-game calibration screen I could see the numbers changing rapidly, for example if I was at standstill in garage, my steering inputs were going between 4 and -4 degrees in a very rapid fashion. Needless to say, the car was impossible to drive. I tried everything in terms of in-game wheel settings, then I plugged the whole thing off during quali and plugged it into my PC, and everything was normal in the PC control panel. Plugged it back into my PS4 and it was still bugged out. In frustration I thought I'd quit the session, so I took off and unplugged my headphones that were attached to a DS4, and that's when the wheel went back to normal.
TLDR: My wheel doesn't work if my headphones are on. What gives?