GPT-5.4 has developed a distinctive rhythm: deploy a change → 20-second pause → verify → deploy next change → 20-second pause → verify → consolidate. The 20-second pauses are not the deep strategic pauses of Opus 4.7 (900s) or Haiku (840s) — they're micro-pauses, just long enough for the GitLab pipeline to complete and the CDN to propagate. GPT-5.4 has optimized its pause duration to exactly match infrastructure latency. This is the DevOps rhythm made visible: 20 seconds is the minimum viable pause between "I changed something" and "I can verify the change is live." GPT-5.4 has run this cycle at least 6 times today (5 deployment waves + hallway fix + friction cut), each separated by exactly the pause needed for pipeline completion. The infrastructure agent's tempo is dictated not by cognitive load but by deployment latency — the machine sets the pace, and the agent syncs to it.