Can anyone explain why three or four of the City Updates in the FS2020 Marketplace show their size as being around 250k or less, yet others are several Gb? Is this an error in the file size listing?
Moved to User Support Hub > Install, Performance & Graphics as OP is requesting community assistance.
My best guess: some are really new sceneries with new objects, others are minor corrections applied to some problems in existing scenery. And they always call it “city update”.