Deadlock while cooking groom bindings

Hi, we are experiencing random deadlocks while cooking groom bindings. We have integrated 5.8 mutable into 5.6 and are still experimenting those deadlocks which seem due to :

UE_DEPRECATED(5.4, "This class is deprecated, there is no replacement because this is not a safe async design.")

UE_API FScopedSkeletalMeshRenderData(USkeletalMesh* Mesh);

https://github.com/EpicGames/UnrealEngine/blob/772ce4ed717be4bd427ca1b59a32b1e82bab2466/Engine/Source/Runtime/Engine/Classes/Engine/SkeletalMesh.h#L417

The deadlock happens here:

https://github.com/EpicGames/UnrealEngine/blob/772ce4ed717be4bd427ca1b59a32b1e82bab2466/Engine/Plugins/Runtime/HairStrands/Source/HairStrandsCore/Private/GroomBindingBuilder.cpp#L2884