Hairworks LOD settings

I’ve recently noticed that most of the built in human projects have tweaked the LOD settings in the Hair menu. I’ve tried to change the LOD settings on my own .apx file, but it doesn’t work. Neither the width nor the density seems to change… No matter how many different settings I insert in the width/density menu, the hair look exactly the same. The camera start distance is 1,50 and the end distance is 0,25.

Is there something I need to do on the growth mesh or the splines in 3ds Max?