Well so far mine hasn't lagged at all in any app, I think max amounts of apps I've had running at the same time is 4 or 5 but I ain't sure... Only time it lags a little bit is when you're CLOSING the web browser because it's one of the most demanding apps, but I haven't noticed any freeze or weird behavior while using them. And regarding the one you tried I think it may be normal, because operators (at least here they do) normally install a crapload of apps to show off to people, and a lot of people uses them, etc.
I might be wrong, but I think the phone's speed is like a computer's OS: when it's a fresh install it feels flawless, but after a while using it, installing programs (apps), cache and shit it starts becoming slow, to the point you need to format it in order to have full performance again. That's why I didn't install a crapload of apps in mine (not that I need many anyway), and it still works as day one.
One thing I noticed though is that sometimes when playing music in the default player, you randomly hear like a crackling or interference noise, that progresivelly becomes really annoying. I read on the internet and it's happened to several phones, so it's Samsung's fault. Yesterday I took it to the operator where I bought it, and they told me to try Winamp and if the problem persists, they'll take it to warranty. With Winamp I've had no problem so far, but I'm not satisfied with the temporary "solution", I mean, it should not have this problem with ANY app at all. If it persists, I'll definitely take it for warranty to either get it fixed or replaced by a brand new one. I got it just 2 weeks ago. For the rest, it works flawlessly.
I might be wrong, but I think the phone's speed is like a computer's OS: when it's a fresh install it feels flawless, but after a while using it, installing programs (apps), cache and shit it starts becoming slow, to the point you need to format it in order to have full performance again. That's why I didn't install a crapload of apps in mine (not that I need many anyway), and it still works as day one.
One thing I noticed though is that sometimes when playing music in the default player, you randomly hear like a crackling or interference noise, that progresivelly becomes really annoying. I read on the internet and it's happened to several phones, so it's Samsung's fault. Yesterday I took it to the operator where I bought it, and they told me to try Winamp and if the problem persists, they'll take it to warranty. With Winamp I've had no problem so far, but I'm not satisfied with the temporary "solution", I mean, it should not have this problem with ANY app at all. If it persists, I'll definitely take it for warranty to either get it fixed or replaced by a brand new one. I got it just 2 weeks ago. For the rest, it works flawlessly.