I Cut My Cold Start by 82% Without Changing a Single Line of Code

I was setting up Claude connectors for my Supabase project — checking permissions, tightening auth scopes — when I noticed something. Region: South Asia (Mumbai) Wait. I'm in Tokyo. All my beta testers are in Japan. I was sure I had picked Tokyo when I created this project. But the dropdown said otherwise. Probably got pulled toward India because I had another India-related project on my mind at the time. One wrong click, months ago, that I never looked at again. And it explained everything. The Slow First Load That Wouldn't Go Away For weeks, my app's cold start had been bugging me. Not enough to stop feature development — I was building in parallel across multiple products — but enough to notice every single time I opened the app. I'd already tried the right things: Optimistic UI to decouple data fetching from rendering Skeleton screens to improve perceived load time These helped for navigating between pages. But that first load — opening the app, hitting login — always felt sluggish