Calling emailImage entryPoint to display Accounts Logo hangs CRM

I have a Custom Subpanel to display all companies logo relate to a particular record.
Calling the CRM entry point to display images hangs the CRM
Here is the img tag inside a loop which company_id being the Account ID

<img src="index.php?entryPoint=emailImage&id='.$row['company_id'].'_company_logo&type=Accounts"

Is this due to 15/20 same EntryPoint calls at a time that makes it non-responsive ?