An Unreal process has crashed: UE4-Hunter

I purchased Hunting Simulator for my grandpa last week after we got him a new PC. He is excited for this game. However, every time we try to play, it crashes with the aforementioned error message. His new PC exceeds all of the minimum requirements. Steam refuses to respond to my pleas for help. I’m desperate. ,I got this Hunting Simulator for my grandpa. He just got a new computer and he loves these kinds of games. It exceeds all of the minimum requirements, but crashes with the aforementioned error message every time we try to start it. Steam hasn’t even responded to my requests for help. I’m desperate. Really want to get this working for him. Please help!