Yep. That and annoying OCD players who then have to reorder their cards. Don't forget that many one time effect are also just some minor delay. But those add up, and are a danger in a realtime game, especially if you are at a difficulty where the countdown is only 10 seconds. Also note that all one time on gain effects of all players have to be finished before declaring a set or you are doomed.
Thanks for the reply.
It's a great game. I have played it with several groups of people with great results.