Bollocks. Winuae worked perfectly on my athlon 3000+ single core 32bit processor. Learn to configure your computer first.
Nah, performance is a mixed bag with WinUAE since somewhere between 1.5.4 and 2.0 (long ago). I know how to perfectly configure my computer and WinUAE, yet performance is worse on a 2 years newer PC. No need for accusations. Maybe if you had followed the development of WinUAE as closely as I have, noob... (hey, counteraccusation!!)