Though it's still an authentic Tarkov experience, SPT improves the flaws of its online counterpart simply by being offline.
From an artificial flea market, to the ability to customize bot difficulty, the mod does a great job of providing “a separate offline single-player experience with progression out-of-the-box for BSG’s official client”, to quote its website. Using the mod SPT-AKI, players create private servers that modify the game into a purely offline experience.