Lets face it even 4 core older CPUs with unlimited power and current by default on motherboards (same as the dreaded Z390) will drop CPU to base clocks as in 3.6GHz etc. when loaded fully on all cores with a heavy load, it won't keep turbo clocks on all cores it will drop all the way to base, the thing is most reviews don't load the CPU fully as only some applications are able to do that and it's not exactly everyday use case to torture the CPU to max.
MCE and power limits have been a problem on Intel motherboards default settings for years many years, mobo makers do what ever they want to look better in mobo comparison reviews trying to differentiate themselves in any way, MCE, power limit, BCLK cheating. With 4 cores no one gave a damn much but now with 8 cores the real power consumption and heat is twice that of specified
Suddenly people start flipping out when the issue is made painfully obvious to them even though it's very very old.