I've been using Go Launcher EX for a couple of months now and, wow, the performance is head and shoulders above the stock launcher. My animations are very smooth no matter which ones I'm using, but I don't like cube, cylinder, out the really funky ones. I just stick to the default, and I think it just looks nicer, not all frenzied. But that's just more my style.
My suggestion would be to give feedback to the developer to let them know that you're having an issue. After all, when an update gets pushed out that has bug fixes "for these select devices" they only knew about those bugs because someone reported it to them.
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