This is already a post, but it has not seen too much attention so I wanted to re-post it. There is an issue with Rec Room on Steam where closing the game through the "Exit Game" key in the Watch Menu will despawn all the objects in the room and never close the game. It instead will go into a Not Responding state, where you have to close the game from the Windows error, or prematurely close the game through Task Manager. I run Windows 10 and play the game through Steam.