Nice to have you back with us mate.
Yeah that is a good PSU and Johny Guru is the man when it comes to PSU reviews.
Ok well things have moved on since the 2500K days but not that much to be fair.
So let us start with this.
In bios F5 to set defaults.
Select XMP 1 as mode of overclock.
Then sync all cores
next block down type in 48
leave all else on auto.
F10 and enter. Lets see how your system does. In OS open CPUz, Core Temp and download RealBench from ROG website.
Run the benchmark with both Coretemp and CPUz open. Look at the temps - let temps be your guide in all things.
Will check back late. We are starting off simple and once we know what is possible with your system we will fine tune OK?
To help us help you - please provide as much information about your system and the problem as possible.