Please help with Loading Screen!

Hello, everyone!

I’ve tried to make a Loading Screen between levels using this tutorial. But every time after my Loading Screen UE4 crashes when it tries to open another level. I use Level Streaming so i decided to change node “Open Level” (like in tutorial) to nodes “Load Stream Level”+“Unload Stream Level” and put a Player Start in second level. Yep, now it doesn’t crash but after Loading Screen a player falls down through landscape of the second level like the level doesn’t have enough time to load. I’ve tried to use delay and change nodes but it doesn’t work.

I’m new to BP and UE so really don’t know how to fix it. Any ideas? Maybe another way for proper Loading Screen between levels using Level Streaming?