So...I made some first very quick tests with very small pictures 250x133px on my Lenovo ideapad Y700 with intel core i7 6700HQ (2,6 GHz boosted to 3,1-3,6 GHz) and NVIDIA GEFORCE GTX 960M.... I am not able to describe visual differences due to very small picture size. But the problem is that the rendering time is at about 50-70% longer compare to standard 1.3.2 renderer. This is too much for the settings I use for my pictures /GI-path1 and standard picture size 2000-2500px + depth of field setting etc..../... My standard rendering time is 15-24 hours now... I am affraid that +50-70% to this time is unacceptable for interior rendering. But I am sure it will be great for desktops with faster graphic cards /like NVIDIA GTX980 or higher/...