Yeah, Updates Per Second. Because Factorio works on a fixed cycle, it can't "drop" updates like physics engines tend to do. So it's tied pretty tightly to your

Yeah, Updates Per Second. Because Factorio works on a fixed cycle, it can't "drop" updates like physics engines tend to do. So it's tied pretty tightly to your CPU performance. Once you see a full factory in action, the mind will boggle at the amount of entities and actions being performed. I'd be impressed if someone could pull that off in a regular piece of (modern platform) software, let alone in a game context.