Quora is not the best source for information. I read some of the top replies and instead of calling this information, it should be correctly called misinformation. Those people do not have the slightest clue as to what they are talking about.
Manufacturers use BD PROCHOT for a variety of reasons. None of these reasons are legit.
My laptop gets very slow when charging (0.40GHz).
When you bought your laptop, did the manufacturer warn you that your laptop will run like a turtle from 1990? There is no legit reason to slow a CPU down so severely. If this is by design then
a) it is bad design and
b) the manufacturer should have told you about this issue before taking your money.
Disable BD PROCHOT. This type of throttling is being misused. There is no reason to slow a laptop so severely just because it is charging.
Your laptop was either poorly designed or a sensor within the power adapter has failed. Who makes your laptop? Dell used to use BD PROCHOT throttling so their laptops would severely throttle if you did something crazy like tried to use a generic power adapter. This was a good way to increase Dell branded power adapter sales. The cheap little switches that are used in these adapters are known to fail on a regular basis.
Disable BD PROCHOT and be happy that there is a free work around for this very irritating problem.