Minor - UEFN/Creative - Noticed a difference on memory for the same project

General Feedback & Requests
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1

Same project, opened in both UEFN and Creative, and the memory is different:

UEFN:

FortniteClient-Win64-Shipping_nDB5tsHZ5t
FortniteClient-Win64-Shipping_nDB5tsHZ5t948×247 55 KB

Creative:

FortniteClient-Win64-Shipping_Qi3VUOj951
FortniteClient-Win64-Shipping_Qi3VUOj9511084×282 78.1 KB