Power limit throttling omen 17

Hi guys, just yesterday I received an omen 17 w200na, with an i7 7700hq. This is the replace for my old and abused (and now dead) msi gt72 2qe that had an i7 4720hq.
Straight away I noticed temperatures next to 80 degrees and variable results on benchmarks on the cpu (while the gpu was comfortably in the 70s range) before repaste the cpu (don't wanna do any dirty job since I can ask for a refund) I decided to go with some undervolt and fix a little this issue.
What I found is that undervolting by 0.145 I've gained roughly 10 degrees c, but xtu showed another sad story, my cpu is throttling every time with no more than 30 w and push it down to 19, while the tdp should be 45...
Temperatures are in the range of the low 70s and frequencies are jumping (ofc) between 2.7x to 3.1 ghz, is that normal to have a power throttling like this, or is an issue given by a crap mother board/bad power management from hp?

Thanks

Edit: digging around i found a bios update (F3) applied it and now it works flawlessly.

 

I think, it is bad power management from HP. Even on NBC, they reported throttling on both CPU and GPU.