Any update on the functionality said to have been in the works back in 2017 in this post? I have an eight tab form that runs very slow because the entire form is loaded at once. Loading 100+ controls plus all the associated rules means my users are stuck with a 90 second page load time and save time. A sub form/multiple page form would alleviate this problem and only load what is needed on each tab as it is selected.
I have been working to find an alternate solution. My new prototype utilizes content types, with buttons and redirect URLs to those content types. This has shortened a lot of the page load times and save times, but both the initial save and continue and the final save and close back to the list are still around 30-40 seconds.
Any ideas?