Client not responding in Loading Screen

Hey, sometimes i experience that once the launcher opens the game and you should see the single players loading, my client just gets stuck. I need to focus the window in the task bar a few times, until the process responds (in task manager it also says it's not responding). If I would click right onto the loading screen in this "buggy time", the windows error manager would pop up and ask me whether I wanna wait or close the process. Sometimes I need to wait like 5 mins, sometimes the process just crashes and can connect to the game a few mins later...

Greets