Map Check Error - Large actor receives a pre-shadow

Development Rendering
1

I am getting a performance hit when trying to play so I did a map check and received these errors:

Performance Warning InstancedFoliageActor_0 Large actor receives a pre-shadow and will cause an extreme performance hit unless bCastDynamicShadow is set to false.

How do I fix this?

2

This answer might help:
Large actor receives a pre-shadow and will cause an extreme performance hit - C++ - Epic Developer Community Forums

Then again, maybe not.

I’m seeing the same warning and like you, the actor causing the issue is foliage.

3

You will indeed get that error using foliage. Make the foliage groups smaller, or just turn off shadow casting on foliage. I did that and my FPS indeed went up quite a bit.

4

Old topic once again, but thank you for your help. I was able to disable shadow casts for my insane amount of foliage, and repro similar shadow using my skylight and another light source closer to my grass.