see this
http://wiki.dolphin-emulator.com/ind...ture_2:_Battle
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What does that link have to do with null dc?
we are talking about the gamecube version ( sonic adventure 2 battle )
Your system seems to meet the minimum requirements, but the problem here is you're using an on-board Intel graphics which are not good for gaming.
This is a NullDC thread, so we're talking about the Dreamcast version. Also, if he can't play the game on NullDC, it'll do a lot worse in Dolphin.
To Fix This Problem
Go To Aica -- Confingura Aica
And Put The Number To 2046
And Start The Game
And The Game Well Be Fast To 60 FPS