Making animation in Rhino 6 with Vray 3

I have a problem with setting up an anmation in Rhino 6 with Vray 3. I use the path animation, in the settings i choose “fullrender” as viewport, and “entire animation” under vray animation setting. I can record the animation as shaded, wireframe so on but in fullrender it still just renders a random frame and after rendered 50 of 50 frames it starts to render again and again but without any output. I have check the target folder also.

Any one with the same type of problem?