Hi Michelle thanks for commenting in our community. Could you try opening your document in a private or incognito window to help us narrow down the potential cause? Could you also try connecting to a different network or disconnecting from your VPN (if applicable)? Sometimes account performance issues can be related to internet security/speed or browser issues. These steps will help us eliminate that possibility. 
If those don’t resolve the problem can you please send a screenshot of the issue so I can take a look?