Later official patches (v1.08) addressed fullscreen bugs, but for v1.05, players often use the PCGamingWiki Window Mode Patcher to ensure stability. Frame Rate: The game is naturally capped at 60 FPS; a 240 FPS Patch is available to unlock higher refresh rates. or instructions on unlocking the DLC Assassin's Creed IV: Black Flag - PCGamingWiki PCGW

If you need help with , finding save file locations , or fixing low FPS , just let me know!

Which of these would you like?

Usually bundled with unlocks for all previously released DLC, such as Freedom Cry Save Game Compatibility:

Assassin's Creed IV: Black Flag Update V1.05 – Everything You Need to Know