form takes too long to load

Hi all,

We experienced some problems with opening forms the past few days. We are unable to open a form (both from the browser and SmartView) as it keeps loading the form. When refreshing via Smart View, we receive an error message, and when trying through the panel or browser, it just keeps loading. Some moments it work well, and just keeps loading. Should we use a "Form" instead of a "Flexform" to resolve the issue?

Has anyone else encountered this issue? And do you know how we can resolve it?

Thank you!!