Hello. Sadly, no. For my project, I am sure it is something related with the groom assets. I can make it work without my metahuman hair asset. I tried replacing it with another metahuman hair asset that I made with the latest version, but it didn’t work either. I read that it is related with DX12, Lumen or nanite rendering not working with the new shader compilation method that comes with UE 5.4. Apparently, some people managed to solve the issue by going with DX11 or/and disabling nanite / Lumen. I didn’t try those since I’d rather not update than not using any of them.