[Lunaryn]

Keep in mind some cards don't always behave well when the background resolution isn't the same power of two in both dimensions (e.g. 1024x1024, 2048x2048). I've had some occasional but glaring rendering glitches under 1536x1536 on a 7600GT, the worst of which was a red mage's shield having one of its points being far enough out in front of said red mage that it looked like some weird sort of GSword. (1536x1536 worked excellently, OTOH, on a Radeon 8500)

But the simple answer is no. No one ever has constant 30 FPS throughout the whole game. It's only a question of how often you stay near this point. For my part I have an Athlon X2 6000+ with a 7600GT, and on 1440x900 and 1536x1536 even under weather effects I still get good FPS with the game restricted to CPU0 (there's a sound bug that occurs if it can run on CPU1) in most places. 2048x2048 makes it sluggish though. Lately I've been windowing at 960x600 and 1024x1024 and that's good enough for casual play. Chances are you'll want to adjust your settings to fit your circumstances anyway, especially when going between windowed and non-windowed play (and fullscreen is still much better quality and a much better experience; if they'd just enable tabbing away in fullscreen (autominimize) I might not even bother going windowed).