Shaky map/level in Oculus rift UE 4.17

Hello,

I have an environment made in 4.17 UE and everything was working just fine.
All of a sudden ( after assembling Pc and oculus on another location, but i did Oculus sensors reset) one of the environment maps got very shaky. The other maps are still alright!
it got super shaky, but only when I run UE made VR!

I would appreciate any tips / help how to solve it!

Yours,
Mark