Um.... why is my forest *breathing*?

Just a Procedural Forest Generator with some trees… what the…? What’s going on and how can I fix it? UE 5.4.

The megascans wind material function doesn’t work properly with trees in instanced static meshes.

fix here: UE 5.4.2* (June 2024) - Megascans Trees swaying up and down - FIX*

Legend! Thank you