I want to use Hair Groom, but I can't install it on UE4

I wanted to use Hair Groom, so I created a hair in Xgen of Maya 2020.
The created data is 324.614KB.
This is the result of expressing the mane of an animal in Xgen.

When I exported this in alembic format and tried to import it into UE4, I got an indication that it would take a considerable amount of time, and at worst, UE4 would crash afterwards.
It seems that it is calculating the closest guide and weight.
What is the cause of this one?
Are the alembic files too heavy?

I am in trouble.
Please help me.

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