It might be too slow of a device if you aren't using a 4S or iPad 3. But also don't forget that the betas are always slow/laggy/buggy. Don't expect razor sharp performance.
Is it just me or is iOS 6 not as smooth as iOS 5? I feel like i'm using an Android - kind of regret upgrading.
with my experience so far with iOS 6, it is actually much smoother and snappier than iOS 5, only have had one problem so far with it and that is that the brightness keeps changing on its own and auto brightness is just not working, other than that, really no problems with me
Beta 1 is screaming fast on my new iPad.
It's not BAD...It's just not optpimal to have it on your day to day device b/c there will be so many more Beta's and its a pain in the ass to update twice a month!
Best to stick to keeping it on Tester Units (iPods, iPads, or secondary iPhones)
But, to each his own!