It is a bit strage with emulators. I did install PC-Task on my A1200/030@50 and windows 3.1 with a 16 colour config. Although it is a bit slow, it's usable. I've even installed Word and Excel and used it to make some work with it.
MagiC64 also run really well on the above A1200. LNinja2 run like a dream. When I used a 4000/040, everything worked much better, but my A1200 didn't let me down. The only laughable performance came from MAME. 3-5 frames in the A1200 and 7-8 on the A4000 with games like Asteroids.