Project crashes after porting to UE5 -> QuadricMeshReduction

I tried to port one of our UE4.27.2 projects to UE5.0.3

And it crashes with the following crash log when opening the project:

Assertion failed: TargetNumVerts >= LimitNumVerts [File:D:\build\++UE5\Sync\Engine\Source\Developer\MeshSimplifier\Private\MeshSimplify.cpp] [Line: 849]

UnrealEditor_QuadricMeshReduction
UnrealEditor_QuadricMeshReduction
UnrealEditor_MeshBuilder
UnrealEditor_MeshBuilder
UnrealEditor_Engine
UnrealEditor_Engine
UnrealEditor_Engine
UnrealEditor_Engine
UnrealEditor_Engine
UnrealEditor_Core
UnrealEditor_Core
UnrealEditor_Core
UnrealEditor_Core
UnrealEditor_Core
UnrealEditor_Core
UnrealEditor_Core
UnrealEditor_Core
UnrealEditor_Core
UnrealEditor_Core
UnrealEditor_Core
UnrealEditor_Core
kernel32
ntdll

I did some research and people were having crashes when they were having meshes with high poly counts(above 1-2 million polys).

Checked the project and the highest polycount on a mesh is 42.790 polys. So I am not sure where to look now.

Has someone any other hints or workarounds for this problem?

Kind regards,