Can't skip clover on boot and overclock not working (intel i5 2500k)

1) Hello, I've mounted the efi partition and edited the config file to rename the default volume so I can skip clover on boot but it doesn't work, any tips?

https://preview.redd.it/qmzwf7zoftv51.jpg?width=752&format=pjpg&auto=webp&s=33750f74cb7f507044989ab9ffcff7b775074255

2) my cpu is stuck at 3.3ghz although I have overclocked it in bios (asus p8z68v). Intel speedstep is off, multiplier set etc. and NullCPUPowerManagement.kext is installed. Any tips?