Grass design

#1
Hey people.

I'm currently working on Hoogeveen airport (EHHO). I've now come to the point where I start working on the (2D) grass. However, one of the things I noticed pretty fast, is that you can't make very dense grass without basically killing the FPS.
Do you guys have any advice/examples/tutorials on how to design proper grass in Sketchup?

Thanks.
 
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