Reproduction Steps

1. Install gping brew install gping
2. Deploy to a fly app fly deploy
3. Scale to 2 fly scale count 2
4. Start gping gping --cmd --buffer 180 -n 1 "curl https://fly-deployment-latency.fly.dev/"
5. Make a small change to the image echo " " >> index.js
6. Kick off a deployment fly deploy

This seems to effect both rolling and blue/green deployments.