A "dramatic pause" is a moment of silence or hesitation that is used in a play, movie, or speech to create tension or emphasize a certain point. Full definition
Later it would seem that Henkel's composure and the next race, the women's 4 X 400 relay, constituted dramatic pauses before a surpassing climax. (si.com)
Similar to «Foxcatcher» two years ago, there are lengthy dramatic pauses in between most of the lines of dialogue. (lights-camera-jackson.com)
It humanizes a character who's often reduced to (at least in films and games) the side - story, the forced dramatic pause between action scenes. (pcworld.com)