Camera slitely rotates in render

I am using rhino 5 SR14 64-bit (5.14.522.8390, 2017/05/22) and Vray V-Ray 3.40.01 in windows 10.

When I render several images using same named view, camera slitely rotate (0.3 degree).
This situation is happening not only me but my coleage using same Rhino/Vray version.
Des anyone know the reasons?

Thank you in advance!

Hi, updating to vRay 3.6 solves the issue.