The problem is that the reflection is much more noisy that the room. What settings should I change to get rid of it? Im using universal setting. QMC , LC etc
Can you show an image of this effect? My initial advice would be to lower the DMC adaptation amount a little bit.
Best regards,
Vlado
Vlado, btw, why new sampler is called DMC ? And why qmc set to brute force gi, as in earlier versions 
It comes from deterministic monte carlo. By default V-Ray no longer uses QMC sampling and this has been reflected in all parts of the UI where any references to QMC sampling have been replaced.
Best regards,
Vlado
btw: the new dmc seems to be 5% faster as the RCs in one of my latest scenes!!! not only for rendering, also for LC and IRR… and this in a free update!
@vlado: have you done any benchmarks with typical scenes and can show some results?
btw 2nd: be carefull with setting the adaptive amount higher than .85 cause this can lead to a blotchy IRR! that thing costs me hours before I regonized it.
@vlado: is there any way to avoid this (in SINGLE IRR mode and dmc)? I can sent you a pm with some examples to show the kind of blotches i get, if you want.
best regards
stefan