@confusis, can you check if the CPU downclocks/downvolts properly if you set any kind of overclock? I've been lurking various Gigabyte threads and it seems to be a limitation with all Gigabyte AM4 boards at the moment. Apparently CPU speed power options disappear in Windows and the CPU runs full tilt.
Yes, clock lowering disappears from Windows power options when the CPU is overclocked (in BIOS), and no monitoring software I've used so far has shown clockspeed dynamically lowering during those times. However, the CPU is reaching very low (~25 W) power usage when idle overclocked to 3.6 GHz.
Tonight, I'm testing the difference in idle power usage between overclocked but downvolted (the stats I have from yesterday, though I will be rechecking them once I have my Windows Update woes behind me), auto everything (I was seeing this giving the CPU 1.32 V at 3 GHz, which seems pretty high), and forced downvolted as low as I can go on stock speeds. This should give me a good indication for how Windows downclocking affects idle power usage. Hopefully that'll be tonight, and I can get those results here then.