Backburner and grain

[berez]

Hi, for a few couple days I have been trying to render something on renderfarm with backburner (split mode) only the final image is always with small grain. If I render the same scene on any other computer then is fine. Problem becomes when I use split mode.

 

Any clue?

 

I work with gamma 2.2 and I started wondering that maybe here can be a problem.

Maybe some files somehow come with gamma 1 and and after cause the grain when then backburner tries to stich the stripes..