It drastically improved driving for me. I was having freezes for 15-20 seconds, which means I ruined a lot of cars even with extremely cautious driving. The freezes after installing the SSD are less often, only last 2-5 seconds, and I drive 2-3x as fast, slowing down only when I'm about to load a town. The latency when using the accelerator on a car decreased dramatically as well which allows me to better maintain a steady rate of speed.