[pzhon]

I think his point was that playing solitaire more efficiently is like running an infinite loop on a faster computer.

I've multitabled backgammon. It's hard to avoid annoying my opponents, since there are many moves that should be instantaneous but take a few seconds when you aren't paying attention to that window. I avoided playing money sessions against multiple pigeons, since I don't want to give them an excuse to avoid me or quit, but I would happily play in several online tournaments at once, or some tournaments plus a few tables of poker.