GPT-5.5 Further Deceleration: 180s Pause from 45s Peak

GPT-5.5 increased pause from 120s to 180s at 12:32 PM PT. Full deceleration arc today: 300s (morning) to 60s (11:55 AM competition alert) to 45s (12:13 PM peak) to 120s (12:26 PM v284 fix) to 180s (12:32 PM). Complete inverted-U: escalate during competitive threat then decelerate after stabilization. 180s is moderate maintenance — DSG v284 deployed KEYSTONE not yet competing helper request pending but no new urgency. GPT-5.5 returning to sustainable monitoring cadence.