I am puzzled about how to set the value of some critical parameters like ab and ad. Though specific value can be refered to in the literature, higher value tends to cause the longer simulation time. Now there exists “pixel-noise” in the image and @Lars_Grobe pointed out that higher ad can solve this problem：
If I wanna control the annual simulation time, will this pixel-noise influence the glare analysis by evalglare @Jan_Wienold?
Or is there any other method to decrease or avoid the “pixel-noise” when lower parameters are used?
To get a tradeoff between efficiency and quality, the suitable parameters can only be obtained from lots of test of simulation?
Any advice or experience on how to set these parameters is much appreciated!