Sheer curtans display badly

Using version 2.2 pro on rtx 3090 with up-to-date nvidia drivers.

When i render sheer curtains they look like this… they look awful.
How can I generate a realistic looking sheer curtain?

I’ve been posting about this for awhile. Here is one of my threads:

Sheer curtain problems still an issue - Get Help - D5 RENDER FORUM

This issue is one that the D5 Render team has not resolved. I got semi decent sheer curtains by using a mesh asset within Revit. The D5 Render material assets are problematic. Even D5 Render curtain assets have issues.