All my app webComponents take a lot of time to trigger the gotText logic

Try a test aia using the AI2 firebase component on a project with unsecure rules. (if you are using the us-central server)

Or try with this new extension:

What server are you using for your firebase project?

It seems like a local issue to you, no-one else is reporting an issue, and I have been making calls to firebase today with the web component without any issues.