

Sometimes it even prevents more than 2 keys at all from across the whole keyboard being pressed at once.

This prevents multiple keys in the same region of the keyboard from being pressed simultaneously.

In order to save money, keyboard manufacturers often put many keys on the same "circuit" of sorts within the wiring of the keyboard. Unfortunately, the only solution is that you must purchase a better keyboard that does not have this limitation. This is a hardware limitation of your keyboard.
