I've tried the following games:
Sonic Adventure 1: Mostly perfect, having Dynarec enabled causes strange glitches with various characters running on certain areas.
Sonic Adventure 2: Perfect, only minor but non-obtrusive graphical errors exist.
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AMD Phenom II X4 810 @ 2.6Ghz, 8GB DDR3 RAM, NVidia GTS 450, 750GB HD, DVD +- RW w/ Lightscribe, Windows 7 Home Premium 64-bit.