Comment 79 for bug 92599

Workaround:

Create a Script with the desired Refresh Rate and mark it as excutable and add it to startup Programs:

 #!/bin/bash
 sleep 5 &&
dconf write /org/compiz/profiles/UnityNeu/plugins/composite/refresh-rate "60"

Now i dont have to open CCSM after every restart and got my 60hz refresh-rate.