5.4 Less productive than 5.3

After switching to 5.4 from 5.3, I lost 10 frames and 12ms per frame.
Maybe you need to turn something on or off?
I use Niagara to represent MASS entities, perhaps this is influenced by what writes to me that I use VectorVM_Legacy?

5.3:
image

5.4:
image

The source that I use is legacy VectorVM:
image

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