have you have an experienced with your website, your web pages become very slow when you refresh
but this messages keep appears.
Network Error (tcp_error)
A communication error occurred: “”The Web Server may be down, too busy, or experiencing other problems preventing it from responding to requests. You may wish to try again at a later time.
For assistance, contact your network support team.
maybe this is not your php code or php.ini configuration but this is happened from your database problems.
i solved this with repairing my database tables using phpmyadmin repair tables.
hope that this can solved your slow web pages also.