On track effects?

Hi, new to the game, playing on ps5 with dualsense. Wondering what on track effects actually do. I figured it meant that the controller would vibrate a little just to simulate the surface of the road, but the only vibrations I get are when cornering hard, rumble strips, breaking traction etc. Like, when I'm just driving down a straight I feel absolutely nothing. Is this how it's supposed to be? I've tried setting on track effects all the way up and all the way down and don't feel any difference.

Or is this why I was able to buy the game for like $6?