My biggest issue with the graphics after SU5 is the blown out brightness that is most apparent at higher elevation. It looks like haze and is most noticeable near the horizon. I have an nVidia GPU and I found that if I reduce the Gamma level from 1.0 to 0.7 the haze is reduced to the point that the sim is almost back to what I had with SU4. Asobo has clearly messed with the image quality and I hope they fix this problem.