In the English dub, the voice actors often sound flat or overly theatrical. The emotional weight of a line like "Saya punya saudara di dalam" (I have brothers inside) loses its tension when translated into generic English action movie dialogue. Furthermore, the lip-sync is distracting. You will watch Iko Uwais screaming in Indonesian, but hear an American accent. It creates a "Godzilla effect" that pulls you out of the immersion.