Fanatec F1 wheel and 2 pedals working fine.

PC2 now developed on track glitch where erratic binary full Off/On input on throttle/brake and steering entirely unrelated to my inputs disrupt my lap and can cause crashes. Sometimes certain parts of tracks. (Not cold tyres). Unplayable. Pedal input more drastic than steering

Calibrations PC and PS4 fine, plugs fine, potienometer small scar but fine, same offline and online. Turned off FF still same. Wheel does work fine in F1 2018

Anyone had this? Must I uninstall PC2 from PS4 and start again?