I have a user that is getting the following image when rendering from Revit.
Enscape v2.4.x
Revit 2019
They got around the issue by doing this:
"i found a way around it as well if need be for today! if i select "render image (for document)" then print that image to pdf, it still maintains it's high quality rendering."
I also had them test on a different PC with v2.3.3 and they didn't have the issue.
I also asked for them to submit feedback. Keep an eye out for feedback from Anita if that helps...