To fix lag and performance issues in Need for Speed: Underground 2 on modern Windows systems, you need to address several "legacy" compatibility bottlenecks. Most lag stems from the game attempting to use multiple CPU cores or running at high framerates that break the game engine. 1. Essential Performance Mods

By following these recommendations, players can enjoy a lag-free gaming experience in Need for Speed Underground 2.

Modern GPU features like Resizable BAR or high-level Anti-Aliasing can occasionally conflict with older titles.

But Bayview had a demon. And its name was Lag.