Chankast VS nulldc

Hi

I downloaded sonic adventure 2 rom

I tried to play it on chankast the graphics is 80/100 the speed is 65/100 the sound 20/100

And I tried i tried it on nulldc the graphics is 100/100 but there are no shadows speed is 45/100 the sound 80/100


Who is the best emulator for this game and what I should do to speed it up mean what should I buy ( video card or what ) please help

unfortunately NullDC is the best out there, there is no Dreamcast emulator that is perfect, I would suggest downloading the Dolphin emulator for Gamecube/Wii and get Sonic Adventure 2 (gamecube version) I hear that Dolphin has been praised for being an extremely accurate emulator.