Maya Vray render


HEY, I am using vray as my render method, so far
But I have an issue to ask tho. When I do Batch Render with Vray, Some of Rendered files got wrong light data.
Those things happen only for inside of Mesh in scenes, where the light is coming through window.
Sometimes, it gets really bright, and gets really dark. So adding files to Nuke of AE, those parts looks like there is thunder lightening going on. Idk how to solve this problem.
ANYONE who knows the answer, plz let me know. Thanks in advance.