Intel non-integer frequency

Hello.
There is a problem and it is annoying.
Intel processor frequency is not whole, for example for 2.8 GHz it constantly changes from 2.798 to 2.802.
At the same time, the CPU memory bus also synchronously jumps at its 1065.xx Mhz to 1067.xx Mhz.
Mat. msi z170 board, percent celeron skylake.
I used to use core2quad on a gigabyte motherboard and everything was clear there. No tenths.
I tried to disable different technologies in the BIOS, but something does not help.
I want even frequencies without these jumps in tenths.
Tell me please. What needs to be changed in the BIOS?