Use the CMS System of EditorX costs me my whole day. Because it doesn’t have live preview i have to click always preview and it takes 1-2 min to show me the result :o
1-2 minutes doesn’t sound right at all. Perhaps you should contact WIX Support.
It’s definitely a long time to go from editor to preview.
I suggest the same thing as @info87066 .
Do you use Velo?
If so, check your code. There may be some function that causes multiple calculations onReady.
Yes I did it’s because I have so many items in my cms 
I am not using velo. But I think I have to use more costum code or build the cms elsewhere