You can grab the tool from GitHub: [
: While the base game often struggles with ultra-widescreen formats, external tools and tweakers enable support for 21:9 aspect ratios , though some UI elements may remain static. ac4 tweaker
If you own Black Flag on PC, AC4 Tweaker is as essential as the Jackdaw’s hull upgrades. It transforms a clunky console port into a proper PC experience. Just cap your FPS to 90, back up your saves, and enjoy the Caribbean without Ubisoft’s technical shackles. You can grab the tool from GitHub: [
For players struggling with general lag without mods, alternative "odd" fixes like the or adjusting CPU Affinity in Task Manager have also been documented by the community as effective ways to stabilize frame rates. AI responses may include mistakes. Learn more Just cap your FPS to 90, back up
: If you experience CPU spikes, ensure you are using version 1.4 or higher of the tweaker, which includes specific fixes for resource management.