Sorry that it took me longer than I thought. I was quite busy. I couldnt really test C64CE beause it doesnt support t64 images. But it booted up just fine.

Galaga Results
4fps frameskip 8 with sound
4fps frameskip 8 without sound

Gunsmoke
Without sound 16 to 15 fps frameskip 8 very playable
With sound 7 to 10 fps frameskip 8 not very playable

1942 results
Without sound 18 to 20 fps frameskip 8 very playable
With sound 7 to 10 fps frameskip 8 not very playable


My Conclusion
MameCE is too slow to be playable in most games with sound. However, if you don’t mind playing with out sound, then some games are very playable and you will have some enjoyment with them.