Daylight factor Radiance Paramters in DIVA

Hello!

I am using DIVA for grasshopper and I noticed that the daylight factor increases when using higher "quality" or higher radiance parameters. Especially -ab and -ad. So the question about the accuracy of the results I get and how close the results are to reality came up.

Where is it to draw the line for the maximum quality yet accurate results?

I have been setting -ab 5 -ad 1000 for simple geometry projects. and -ab7 -ad1500 for more complex geometries.

What do you think are reliable radiance parameters based on your experience?

Thanks a lot!