Is the processor voltage set correctly?

Question

Processors

There are I7-8700K and GIGABYTE Z370 SLI XP. I set the multiplier to 45 in the BIOS. I set the voltage to 1.180, since before overclocking with a load on all cores it was 1.164 - 1.188. I set LLC to High, besides it there is also Standard, Turbo and Auto. In Auto and Standard, at this voltage, the system either does not start, or starts and freezes tightly. If you increase the voltage, I set the maximum to 1.240, with Auto, Standard, Turbo, High LLC, the system works stably, but the voltage under load still sags a little, or rises to ~ 1.260. I decided to lower the voltage to 1.180 and install High LLC (with Standard and Auto, the system does not work stably). During idle, the voltage is 1.188 (but sometimes it jumps 1.200), and during the AIDA test it drops to 1.164 - 1.176 (with any LLC profile), but in games the voltage stays at 1.188. Actually, does everything work correctly? Is it normal that the voltage can jump up to 1.200, or during the test, on the contrary, it jumps up to 1.164 - 1.176? Am I accelerating correctly?