i18n in next.config.js introduces significant latency in App Router about next.js HOT 3 OPEN

  i18n: {
    locales: ["en-AU"],
    defaultLocale: "en-AU",
  },

✓ Compiled /test-app-router in 394ms (479 modules)
 GET /test-app-router 200 in 730ms
 GET /test-app-router 200 in 248ms
 GET /test-app-router 200 in 238ms
 ⚠ Found a change in next.config.js. Restarting the server to apply the changes...
Debugger listening on ws://127.0.0.1:9230/3d8a59f2-3443-43f0-9bac-a41e079edf18
For help, see: https://nodejs.org/en/docs/inspector
   the --inspect option was detected, the Next.js router server should be inspected at port 9230.
  ▲ Next.js 14.2.8
  - Local:        http://localhost:3000/
  - Environments: .env
  - Experiments (use with caution):
    · externalDir
    · outputFileTracingRoot

 ✓ Starting...
 ✓ Ready in 1567ms
 ✓ Compiled /test-app-router in 392ms (479 modules)
 GET /test-app-router 200 in 506ms
 GET /test-app-router 200 in 30ms
 GET /test-app-router 200 in 38ms
 GET /test-app-router 200 in 48ms