Mail to segments sending only few

Your software
My Mautic version is: 3.3.4
My PHP version is: 7.3.27
My Database type and version is: MYSQL Ver 15.1 Distrib 10.2.37-MariaDB, for Linux (x86_64) using readline 5.1

Your problem
My problem is: *We are using amazon SES as the email provider and connect with them using configuration SMTP settings.When sending emails to segment (mautic configured to send immediately) the sending of emails get stuck and only a few get sent, even with small lists of 204 emails. I can send and receive test emails and also campaign emails are being sent. This is a recent issue. *

There are no errors in the log.

The spool folder is empty.

Can someone from the community help me please?