After a rocky launch, the final official patches (v1.6.2.0 and later) significantly overhauled the game's performance and stability:
You will find torrents labeled “Batman Arkham Knight – All DLC – Fully Patched – RELOADED” or “FITGIRL repack – v1.1.15.1” . While these might contain the correct patches, they present major risks: batman arkham knight dlc pc download patched