Problem with Advanced Designer?

It's not regularly saving changes. Seems very glitchy and slow.

Please try clearing your forms cache: https://www.jotform.com/help/229-How-to-Clear-Your-Form-Cache 

If the issue persist, please open the browser console report while it is happening: https://www.jotform.com/help/453-How-to-get-a-console-report-from-most-common-browsers, take a screenshot, and share it via this thread: https://www.jotform.com/help/438-How-to-Post-Screenshots-to-Our-Support-Forum