What a rip off!  Everyone else can get their ACO working (of course there were a TON of launch-week problems, now mostly buried by Google’s “helpful” algorithm), but I can’t.  I’ve reduced cores, run the “Gaming Mode” option on my CPU’s configurator designed to make poorly-programmed games run, and disabled the second video card, unlinked all my monitors except my main AND even tried 1080p on my main monitor, all to no avail.

I posted about it on the Steam forums here on the off chance that anyone is interested, and I’ll update if I ever find a solution.