Downloading attachments

I run the Norton 360 Deluxe on my MAC, using Microsoft Outlook for Mac, for my email.

My problem: It is taking forever for attachments to download. The message is " Downloading Attachment from server." My server is Hostgator. I checked with them, thoroughly, and they are getting attachments from senders and routing them through. I am new with Norton and I fear Norton is trapping them and delaying download. How do I deactivate that function? Help? I run Sonoma 14.3.1. on my MAC. This is a constant issue, occurring with almost all attachments. Some come through in 15 seconds and most take many minutes.

I'll ask this thread be moved to the Mac forum board for better exposure to Mac users.