@buzz
My MicroA1 has an IBM 750 GX CPU running at 800 MHz and 256 MB of RAM. I am currently running AmigaOS4.0 Pre-release update #4.
Some of my applications are very old, so I use E-UAE to emulate an Amiga with 68000 CPU, OCS chipset, NTSC, 1 MB chip RAM, and upto 8 MB fast RAM. E-UAE allows me to use AmigaOS 3.1 for these applications.
I am currently using an AmigaOS4/PPC binary with SDL graphics, called E-UAE_0.8.29-WIP2_SDL.
IMHO, it is the fastest version of E-UAE for AmigaOS4.
I don't know about the games you mentioned, but I would say that MegaBall4 (Non-AGA version) runs very close to the speed it ran on my Amiga 2000HD. Realistic game play and music.
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redfox