Level loader

Hello!

I’m developing a game. I have a Loading Map (Persistent) as main map, in these Loading Map I have all login stuff etc. But when I login, then I have to load the first map and using “Open Level” freezes the game unitil the level is opened. Using “Load Stream Level” doesn’t show me the level, I used Print String when completed and the string comes up but the level doesn’t change. Anyone knows how I can load a level without freezing?

Attached BP.