What kind of lights do you have? VRaySun?
But one more question, pictures with LWF (with srgb button on) now saves bad with automatic gamma, which worked fine in previous releases. Or same changed behaviour?I don’t think Autodesk changed anything in that regard. Make sure that the file output gamma is 2.2 (in the MaxScript listener type fileoutgamma=2.2)
Best regards,
Vlado