big problem with light splotches

I´m having severe problems with white splotches as seen in the example.

Checked coplanar faces, checked materials, checked different irr and lc settings,
sun invisible, no matter, still splotches.

Any ideas ?


Update: I´ve been able to get rid of the splotches in the front near the mirror. They were caused by the lights in the lamps. But no matter which VRay lights I used the only solution was to delete the lights and give the lamp shades a vray light material.
Still having problems with the back splotches which seem to be cause by a vray mesh light (in the ceiling).

I see you have STORE DIRECT LIGHT ON…I would always have this OFF unless you have heaps & heaps of lights…especially with your current LC settings
It also looks like you need to turn on CHECK SAMPLE VISIBILITY on your Irradiance map setting as well…& just to be sure I would also turn on Detail enhancement at about a centimeter or 2.

This should clear all your problems

Cheers

Thanks very much ! Indeed these settings have helped a lot. I didn´t know what they meant before.