Playbook: tune header-bidding timeouts by geo, not globally

Playbook: tune header-bidding timeouts by geo, not globally
Watching: one global timeout is leaving money in slow markets and slowing fast ones.

— Pull bidder response-time percentiles split by country
— Set timeout to the 80th percentile of your top 3 bidders per region
— Add 150-300ms for mobile web vs desktop in the same geo
— Enable bidder-level timeout overrides for known-slow SSPs
— Re-measure setTargeting fill after one week, adjust the laggards

Impact: geo-tuned timeouts recover bids that a tight global cutoff was discarding. rumor