So I kinda just figured this out. Open your 1st person Blueprint, at the top click “class settings”. now on the right side, you’ll see parent class under Class Options. Choose ArchVisCharacter. I also set the default pawn class in the project settings like you did. I have no idea if that makes a difference or not. I’m still a n00b at UE4 so i didn’t want to label it an “answer”