Frontend Performance - 500 data fields singleton

Hi all,

currently I want to make a huge JSON editable for a customer. Best case for cockpit I thought.

I wrote a little importer, which in first instance create the singleton data structure file from the existing JSON. Works like a charm and I can edit all fields … in theory. My problems seems to be the frontend performance.

The original JSON file does have 500 datafields (yes, all single and different fields, no use of collections), which I currently all handle as simple text fields. My chrome is running for a 55sec at 100% CPU when I open the singleton form for editing.

Does anybody have any experience with such kind of larger data sets ?