overacts

"I also worry [that] without this impact, in the later part of the movie you might think the actor overacts in some scenes, " Lee says.

“我也担心，失去了这部分效果，在电影后面的部分你就会认为演员在一些场景中的表演是夸张的，”李安说。

An actor who overacts or a performer who exaggerates.

过火的表演者，夸张的表演者。