Metahuman's hair malfunctions in UE5.5 (not LOD)

Development Character & Animation
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Snipaste_2024-11-19_03-05-54
Snipaste_2024-11-19_03-05-541920×1083 80 KB

Metahuman’s hair is faulty in UE5.5, not the LOD problem. I have set the LOD to 0, and the hair will flash as the camera moves. How to solve it?