I’m not sure if there is a “wait until everything that needs to be loaded at start is complete” sort of node or smaller system but what you can do is that right after you run an open level you can make a widget with some image,text, basically whatever you want to have that UMG can provide and also have a progress bar (if it can be connected to some sort of load progress) or use the throbber / circular throbber (havent looked into these myself) and just wait x-amount of time before removing said widget and allowing the player control of it’s character.