Reflections of lights flicker

[zoranm]

A bathroom. Four lights inside. Lights are square with little vray light inside (80x80 mm).
If I render an animation on my PC all is OK.
If I render via backburner, reflections of lights on tiles and glass flicker, even if the frames are rendered on my PC.
When I say flicker I mean that reflections of lights are bright as they should be in one or two frames and than become dim and blury in next frame and so on...
Problem is reproductible on other PC in the office.
I did some searching and some people recomended switching off the "rendomize samples" button and that didn't help

Max 7, Vray 1.47.03 heaps of memory, 2xdual core opteron 285.
Rendered with Med.Anim. settings.


Any help would be appreciated.

Regards

Z.

[DaForce]

Hmmm make sure you not saved your lights with your IRmap/LC, so in the light properties make sure "save with irradiance map" is unticked. and in your LC settings (if your using it) make sure "store direct light" is off as well.

Are the objects that they are reflecting on using any glossies? if so are they interpolated?

Also if possible could you show a few frames or part of the animation that shows the problem.