Huge project size when exporting to windows after activation of nanite

Development Platform & Builds
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1

I have a game that weighs about 500MB and I decided to use nanite technology.
After activation nanite on all my models the game weighs about 2500MB (2.5GB).
The improvement was not necessary so I decided to cancel the nanite but the game remains 2500MB (2.5GB).
what can i do?

2

Maybe the system saves the data in a folder that can be deleted? Or maybe there is some cleaning tool?