Sudden VR cockpit sight center movements

[DST]

Really not 100% sure at the moment if this is a problem with my hardware or general problem with DCS, but I just today experienced annoying involuntary recenter movements of VR cockpit sight in the F1, so I have to press 5 on the numpad from time to time to readjust view, does anyone experience this too? Don´t have this problem in other plane or any other VR application.

Rift S user here.