Need help with Steam VR Cockpit moving

Need help with Steam VR in MSFS2024. Every time I use Steam VR my cockpit moves around me whenever I move my head. If I look left, the cockpit moves right, and so on. I have a Pimax Dream Air and I’m trying to use the Sboy3 driver with steam, but this making it unplayable.

I have tried disabling motion smoothing etc but nothing seems to work. I get the same effect when using Synchronus Spacewardpin Virtual Desktop, but in VD I can just disable it and it works perfectly. Any ideas? I get this with steam no matter what headset I use…