Thank you for reaching out to the Constant Contact Community. It's my pleasure to assist you today.
I'm sorry you are experiencing slowness while working in your account. I would love to troubleshoot this further for you. The first thing I always recommend is changing browsers to see if the slowness occurs there as well. If that doesn't resolve the issue can you send an email to social_support(at)constantcontact(dot)com with the following information so we can take a deeper look at this?
Once we have this information we will be happy to do some more research. Please feel free to reach out should you need anything else. Thank you for choosing Constant Contact. Have a great day!