The game is natively locked to 30 frames per second. Community-made 60FPS patches exist but are not official.
You can download the arcade racing game (also known as Split/Second: Velocity in Europe) through official digital storefronts like Steam for $19.99. While some community platforms like the Internet Archive host files for archival purposes, purchasing through authorized retailers is the standard way to legally acquire and support the title. Where to Download Split/Second Split/Second Free Download
The game is available on Amazon Luna and can be streamed on PlayStation 4/5 through certain subscription tiers. The game is natively locked to 30 frames per second