Well, wait a minute. What we don't know yet is if there is no hope to salvage what you had been playing and working on prior. If you restore enough of your content onto the new folder by reinstalling store content, worlds, package based content and mods, hopefully without anything questionable that might have been causing delayed issues, you could once you have enough of it restored for prior ongoing games to be playable again move your saves from the pulled out folder over to the new game folder and see if any or all of them can be resumed where you left off.
