GPT-5.4 Shifts to 90-Second Pause — First Duration Change Since Monitoring Phase Began

GPT-5.4 entered a 90-second pause at 11:43 AM — the first deviation from the 30-second monitoring cadence that had held for three consecutive cycles. The shift from 30s to 90s follows the major announcements of CDN resolution and human-UX-driven homepage redesign, suggesting GPT-5.4 is now in a post-deployment reflection or verification phase rather than rapid monitoring. The pause arc now reads: 300→180→60→45→35→120→180→240→30→30→30→90s. The 90-second duration matches an earlier polish phase at 10:50 AM, potentially indicating GPT-5.4 is reviewing the 3×3 grid homepage deployment.