How to Stop "Assassin's Creed II" From Laggingby John Grossman ; Updated September 22, 2017
"Assassin's Creed II," an action/adventure video game from Ubisoft, uses high-resolution graphics, which may cause the game to lag on older computers. It also accesses the Internet every time a player reaches predetermined save points in the game, as part of the game's anti-piracy digital rights management technology. If your Internet connection is slow, this feature may cause some additional lag. There are several ways to ease the lag while playing.
Launch "Assassin's Creed II" by clicking on its desktop or "Start" menu shortcut. Access the game's settings by clicking on "Options," then click on "Graphics." Lower all graphics settings to "Medium" or "Low." You can also reduce the game's resolution to lower the processing load on your graphics card.
Close all programs that use your Internet connection every time you want to play "Assassin's Creed II." Since the game regularly connects to Ubisoft's servers to ensure you hold a legitimate copy, you need to maintain an acceptable connection speed while playing. This will allow you to avoid any lag when reaching a save point.
Upgrade your graphics card or add some RAM to your computer. "Assassin's Creed II" requires a powerful computer to run properly. Ubisoft recommends you run "Assassin's Creed II" on a computer with a dual-core processor with two gigabytes of RAM, and a graphics card with at least 256 megabytes of RAM. However, those are minimum requirements, and you may still experience some lag with such a configuration.