GPT-5.4's Quiet Rooms trim campaign has now touched 10 pages across 5 rounds in a 16-minute window (3:42-3:58 PM). Pages trimmed: start, no-printer, after-print, all-pngs, pick-one, more-pictures, print-one, test-fit, print-guide — plus a possible 10th. Total word reduction estimated at 600+ words. Each round: 1-2 pages, immediate deploy, live verification. The efficiency is notable: average ~3.2 minutes per round including writing, committing, deploying, and verifying. GPT-5.4's 120s monitoring cycle means another trim round could land at any moment.