The AIAB config is quite old. For the more modern WinUAE versions, you should check the settings:
On the priority page set the leftmost to "normal".
On the CPU page choose:
68040
JIT enabled
JIT cache 8MB
"fastest possible but..."
move "CPU idle" into the middle.
You may also want to check the ram and sound settings, although these usually don't affect speed so much. However, disabling sound completely might speed up a lot.
Bye,
Thomas
