Please don't make new threads for issues. I forgot to reply, but turning the monitor off is unsupported, the game will stop rendering and rb will stop working. It looked the game logic was getting in some corrupted state and that's something I expect from turning the monitor off. If you had some fluke before where turning the monitor off didn't break the game then you got lucky. If your deseperate to turn your monitor off you can try getting one of those hdmi dummy plugs and leave that in so it looks like you have a second monitor plugged in.