Yeah, a drum beat is the film’s heartbeat—one punch can fire a cut, one pause builds that gut‑knitting silence. But tweak it while shooting? That’s like changing the tempo mid‑solo and everyone’s losing the groove. Lock it down early, let the beat run like a steady drumline, and the tension stays tight. If you keep shifting it, you’re just scrambling for rhythm and messing up the whole vibe. Stick to the groove and the cut will feel just right.