When you change projects, UEFN has to reupload the entire project to the server before you can even test, and on an average upload speed, it takes around 12-17 mins to do so. Now imagine you have to maintain 2-5 projects in the future, when bugs appear on new updates, this is more than an hour of waiting JUST to test.
This iteration time is killing all the motivation and there are so many aspects that cause a very sluggish experience. Would love to at least save 3 projects on the server, instead of 1, that way we can have it happen very rarely.