I have some white cloth curtains that will be blowing in the wind. When the sim starts, the curtains are just hanging down, and I can see the sun on the desk even though the curtains are covering the windows. The sun should be diffused a lot and not hard light until the curtains start to blow and rise and then we see the sun shining through.
When I turn off transmission in the cloth material, it blocks the sun, but I don't want this either. Checking on or off "thin walled" on the cloth material makes no difference in the shadows here.
I noticed when I use subsurface instead of transmission, the sun looks correct on the table (diffused and soft), but the curtains don't look good like they do with transmission.(see screenshot
How do I get the light to be correct on the table AND get the curtains to look right?

