Support responded to this issue with the following message (sounds odd that this is a performance issue):
Thanks for reaching out. It sounds like you may be running into some performance issues we’re hoping to address with a platform update set for late in the day on Wednesday (9/30/2015). I’m hopeful it will clear up what you’re seeing. We’ll absolutely do our best to get you taken care of if that’s not the case of course, but for now do you think you can sit tight, and follow up later in the week if you’re still having trouble? Again, one way or another we’ll make sure things are working for you as expected, I really think the upgrade might help.
Thanks for working with us,
Auston
SmartThings Support