Hello
I've tried same game (Goblins II) on Hatari and UAE.
Results without any overclocking
Without usb mouse:
Both unplayable (mouse is unsynced in hatari and also in uae).
With usb mouse:
UAE - mouse sync better but still I cannot reach right screenside with mouse pointer, but speed is so slow that almost unplayable. Goblins are lazy to walk :-)
E-UAE - no mouse pointer visible - unplayable
Hatari - fully playable with decent speed.
So as i read, hatari is based on UAE cpu emulation it is then clear that slowness of UAE is not in cpu emulation but somewhere else. (gfx, sound, i don't know).
I suggest play games which are availalble on both platforms in hatari and for other only amiga wait till someone speeds up UAE or try upcoming xfellow. Or wait for faster Z model :-))))
Next I will try some scrolling shooter which need speed gfx ... speed of Hatari seems to me 5-8 times better than UAE