I assume that you are talking about the Xcode device simulator? That might be slow. On an actual iOS device, WebViews are quite fast. Although, perhaps the iTunes website is a bit too taxing on the mobile browser or requires extensions that the mobile browser does not have. Have you tried going to your iTunes page via the iOS device Safari app? Is it any better?
If you are trying to get your app to display its iTunes page so that your customers can rate it, there is a much easier way to do this. You can use [lua]system.openURL()[/lua] and display your app’s iTunes page via the App Store application itself. My understanding is that is how Apple wants everyone to do it. The following website can generate the link to your app…
http://itunes.apple.com/linkmaker/
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