Justin Hunt

Just looking at your sun settings, a couple of things

1) The photon Target is way too small, it should be just large enough to fit the windows, ruff guess 15 - 20 meters

2) turn Off aerial Perspective, this is better for (as its name suggests) aerial shots where you want a bit of fog/distance haze on the horrizon, not so good for interirors.

3) Increase the sun shadow softness to clean up the shaow edge grainyness

Exposure control

1) Turn Off exterior daylight, you may need to play with the physical scale

GI

1) Increase the photon sampling radius, try 200 - 500mm

2) Increase the Max trace Depth, gets more light bouncing around , you may need to compensate with exposure control

3) leave Decay at 2

4) Turn On "All objects generate GI"

FG

1) increase the interpolate to 80 -100 smooths out the blotchies

2) Noise filtering to standard, anything higher slows down rendering too much



jhv