Well, I got an 1,8Ghz P4 and WinUAE is really FAAAAAAAAAST here
I can view AVI´s/MPEG´s even in Fullscreen, listen to mp3´s and all that Stuff, even newer games that run a bit choppy on my real A2000 with Blizzard 2060 run like hell on WinUAE (for Example Earth 2140
)
Btw. AHI works fine for me, never had any problems with it