For me (AMD 2600X) it takes <2% CPU when paused (and <3% cpu when running what I'm currently playing), and it's using <1% GPU resources (both paused and not). It can go to sleep and come back with no problem, so I'd definitely turn on such an option if it was available.

I'm currently on Factorio 1.1.50 from Steam on Windows 10, single player (with mods but I don't think it matters). While factorio is running, Windows doesn't turn off the screen even when idle (which makes sense). I'd like it to allow Windows to turn off the screen and sleep if the game is paused. M...

"spritesheet", not "spreadsheet". I spent a long time reading this sentence until I figured this out. ; "Everything inside the tabs is part of the preset." - it doesn't really look like it right now -- From the screenshot alone, it looks like the preset and the tabs are...