Helios 300 i7-8750H Power Throttling

Scotthew

Using this video as a guide, I'm trying to address heat problems by undervolting the CPU and its cache.
https://youtu.be/yNt9L3BWOFo

I used ThrottleStop to set the voltage offset for both CPU and cache to -125 mV.  This seemed to help significantly with temps; I went from 90-93°C to 76-82°C. Yay!

But now I'm having problems with power throttling. Under heavy load the CPU clock is capping out at around 2700-2900 MHz. I don't necessarily need the advertized 4100 MHz, but I would like more performance than I'm currently getting.

Is there a setting I've missed or something else I should try?  Or did I just get a crappy piece of silicon from the lotto?

Thanks!

Scotthew

* I said 4100 MHz advertized, but that's only for two active cores.  The 8750H should get 3900 MHz clocks with 6 active cores.