The 1.0.1 update (approx 450 MB) replaces the nvn memory pools. It introduces a dynamic pool resizing algorithm. Instead of holding 500 wave particles in memory, the UPD forces the GPU to flush the pool every time you fast travel or enter a loading screen (e.g., diving bell segments).

The Switch version features several "Quality of Life" enhancements not found in original releases:

: Adds new locations like Black Island, Mystery Island, and Sacrifice Island, along with new outfits and ship items. Ship Packs : Includes the Death Vessel Pack Crusader & Florentine Pack Kraken Ship Pack for customizing the Extra Content Pack : A free separate download on the Nintendo eShop that adds concept art, CG trailers, the Assassin's Creed Awakening manga, and the Blackbeard: The Lost Journal Technical Specifications & Updates

Black Flag on Switch includes most DLC packs that were released for the original game. However, to have the “complete” set referenced by the keyword, you specifically want:

If the DLC does not appear, ensure your base NSP matches the same region and title ID as the update (USA: 010044700C1A2000 , EUR: 010044700C1A2800 ). Mismatched regions will fail to install.