Why does the processor troll after a power outage?

Question

Windows

Notebook lenovo ideapad 700, based on intel core i76700HQ processor. In the mains mode, it works in the "normal" mode (3.5 turbo, 2.6 main). If you turn off the battery with a charge of more than 30% - the work will be exactly the same in the "normal" mode. But as soon as it becomes less than 30% of the charge, the frequency drops to 0.8 GHz (and does not rise above). From the Intel Extreme Turing Utility program, I noticed such a trend - as soon as the battery charge threshold drops below 30%, the Thermal Throttling parameter becomes enabled, while the temperature does not rise or fall (usually 34 degrees). I began to look for a solution to this issue, but did not find an answer. My power plan is set to max. Why is there such a limitation? At what level (windows\bios)? And how to solve it (the operating time of a laptop is not as important as performance, so let it give out 3.5GHz even with 10% of the battery and "die" with honor :)).
Here is the graph, where the green line has risen sharply up, I connected the laptop to the network. It can be seen that the temperature (blue) is stable "normal" (36), but at the same time it is trotlit and thus the frequency is reduced

Answer 1

Well, obviously the problem is in the "power circuit". If you have "maximum performance" and this does not help, then you should either try to install a utility from the manufacturer for this, or if it is, remove it.)