SinartNZ

Are you by chance using the AORUS GRAPHICS ENGINE app? if you are that is the offending app causing your monitor not to sleep its a known well documented issue with this program.

Using CPU-Z to check voltage and with ICUE open I have 0.900v when fully idle and I see the same in Ryzen Master... any other monitoring apps show a varying range of voltages on my 3700x from 1.3 to 1.5 for less than a second at a time. Its the monitoring programs causing an issue as AMD_Robert has said repeatedly.

Ryzen 3000 series support, ICUE will only read cpu load and no longer reports temps