Your undervolting WAY tooo little. Especially considering how little cooling you actually have for such a demanding processor. First, make sure you have the power fully open. For MSI the setting is called, "Water Cooling" but it essentially allows the CPU to use as MUCH power as it wants, I dont know what setting this is for ASUS, but use and enable it. (sounds counter-intuitive I know). But here is why, now go to your voltage offset settings and you need to set it to Adaptive with Offset, or whatever Asus calls this setting. Then change the offset value to (-) "negetive". Now for the value, start with 0.08. Run tests, make sure your stable, if everything is good, move to 0.09, test again. Finally try -0.10. This is my offset, and with this offset and the CPU able to use adaptive power up to unlimited amounts, it will still only pull ~ 260'ish watts MAX even in C23 with AVX instruction. Additionally, your CPU should only be drawing about 1.3 volts MAX as well. With any luck and through the aid of a hopefully properly mounted AIO and decent flow rate, you should see temps MAX OUT around 92-94 degrees like my system (just built one for a friend). It sounds ridiculous allowing the system to draw unlimited power, and having your voltage set to auto/adaptive and then throwing on a negative offset that high, but don't ask me why, it just works.
