First thing is to get off of the AI suite and use BIOS to OC instead.
There are many OC guides posted, and I do mean many.
Here is just one of them
http://edgeup.asus.com/2017/01/31/kaby-lake-overclocking-guide/?_ga=1.60682797.1274612154.1485930838Im not too fond of Raja's methods or order of operations or jumping all over the place from one thing to another but this will at least ge you familiar with the settings.
If you go into you BIOS it doesn't take much to hit 5GHz if your chip is capable. About half cannot make 5Ghz and only about 5% make 5.2GHz
As Stated try 1.35 or so, Im at 1.315 for 5Ghz.
Leave the RAM, Core cache etc alone until you get your CPU up then you can walk the rest up after.
In Digi + Tab set Load line calibration to at least 5 then CPU current to at least 120% as well as 120% for Dram, phase control to optimized for both CPU and Dram.
You can tweak it from there, just a starting point.
Also please post up ALL of your PC specs for any possible trouble shooting should it be needed. What Ram, GPU and settings, temps your are reaching etc all come into play.
Dont be too upset if you cant reach 5GHz as its a 50/50 chance you wont, My first 7700K wouldnt make it past 4.8GHz no matter what I tried. Pretty much all can reach 4.8GHz with an occasional total dud.
I cant express the importance enough of doing this in the BIOS and not AI suite. AI suite will bite you, its just a matter of time. One little glitch while you are running is all it takes. If you are doing it from the BIOS and the OC fails then it will reboot and tell you it failed to post and to make changes. AI suite will just brick your machine.
“Two things are infinite: the universe and human stupidity, I'm not sure about the former” ~ Albert Einstein