Larian Studios Forums Divinity: Original Sin 2 - The Modding Dungeon Divinity - Original Sin 2 - Modding Troubleshooting move terrain and props together to an origin map?

So i spent 20 hours one one project with my own map, not thinking about how the game handles party members and loading, Id like to add this map to the origin reapers coast map so i can have seamless gameplay. is there a way to do this? also damn thats a lot of props, how can i get the performance better when editing in that map to not be 12 fps?