Hmm, I dont think its M2 that is the problem as much as it is El Cheapo M2. Im looking at buying one of the latest releases with the GTX1080 and M2 drive is a huge part of the equation.
I'm running two 512GB M2 Samsung 950 pros in my G752VY laptop in raid 0 and it has yet to throttle, not even once, not even after I pounded it for half and hour of continuous reads and writes. I did put some small ram sinks on the controller, that's the only thing that warmed up in the least. Its the chip closest to the socket end. Actual Vnand temps never swayed in the least.
Nice to know info though............I can add toshiba to the list of M2s not to buy!
“Two things are infinite: the universe and human stupidity, I'm not sure about the former” ~ Albert Einstein