Cold Start Issue in NextJS application

### Before opening, please confirm:

- [x] I have checked to see if my question is addressed in the [FAQ](https://github.com/aws-amplify/amplify-hosting/blob/master/FAQ.md).
- [x] I have [searched for duplicate or closed issues](https://github.com/aws-amplify/amplify-hosting/issues?q=is%3Aissue+).
- [x] I have removed any sensitive information from my code snippets and submission.

### Amplify Hosting feature

Deployments, Frontend builds

### Is your feature request related to a problem? Please describe:

Hello Community,

Lot of users in amplify are facing the issue in which the website takes more than 3-4 seconds to load because of the cold start, It makes UI experience of the application bad, some users might drop of the website because of the cold start.

### Describe how you'd like this feature to work

I request you to improve the coldstart of the website which typically takes 3-4 seconds and make the UI experience of the Amplify better.

The issue names no repository files, tests, or entry points. Start by reviewing the Amplify Hosting deployment and frontend-build paths and reproduce the reported Next.js cold start; define a measurable startup target and validate it against a representative deployment.

Written by the indexing model from the issue text.