I copied all of my old mods to another directory on my system, and subscribed to the Steam Workshop versions of everything I had installed. Unfortunately, whenever I launch the game, it hangs. By which I mean, I open the mod loader, the game informs me that it's checking my subscription status (or, more rarely, downloading my subscriptions, if I let it sit there long enough) and then proceeds to take up all of my CPU time without doing very much of anything. ...Why exactly would a download cause that much resource usage? Edit: It seems there's some sort of CPU problem with either my system or the game in general, if not both. I'm getting massively stuttering audio, getting worse over time, and before I quit the game my fans were spinning at maximum (loud, oh-snap-we're-overheating) speed for over ten seconds. Since literally everyone who isn't me uses multiple cores these days, mind checking to make sure there isn't anything that's trying to force dual-core processing patterns?