grass after updating from 4.7.6 to 4.8

I just update to 4.8 and my grass it just got worst, here some pictures

4.7.6 looks ok

and here how it looks in 4.8

is there any reason why something like that should happen there is something new to do in the 4.8 to have a good looking grass.

please help me out.


I have found a solution with this tutorial