How do I keep quality up during a full kitchen rush?

You can hold your own on a normal night. That is real ground gained. A full rush still overwhelms you because speed and quality start fighting each other, and under a flood the quality is what slips first. That is not a lack of skill; it is a lack of system for the chaos. Speed under pressure is not about moving faster; it is about wasting less. The cooks who stay clean in a rush are not rushing, they have set up so the fast thing and the right thing are the same thing. Order before the storm is what saves quality inside it. Small step: before your next busy service, get your station set so the things you reach for most are the easiest to reach, and drill your steps so they are automatic. Prep buys calm. You already keep up. Now build the setup that lets you keep up without dropping what matters.