I`ve noticed that too, using the latest version.
Move the "CPU Idle" to the left, disable the sound emulation, tick "immediate blitter", and turn off the collision level.
@AmiKit
Regarding AmiKit 1.2.2, updated on-line till the latest 1.2.9:
I have problem launching SimpleMail, it won`t start (SnoopDos shows that the exe cannot be opened).
The pull-down menu appears when activated by right mouse click (touchpad), but as soon as I move the pointer it goes off!
Any ideas?