Sorry about the performance issue - most of the team was completely new to Unreal, so it might be something we'll look into when we go back to polish. And yeah, the game does go on. If you return towards the start of the game you'll be told where to go next. Thanks for your feedback!
Edit: I watched your gameplay video, and as the Comrade says, you're supposed to go west. There's a branch that goes up to a boss fight. We'll look into making it easier to signal to the player where to go!