I'm having trouble with some games through WHDLoad on an A4000 with a 68040. Generally it manifests as slowdown as soon as more than a few sprites appear on screen; in Cannon Fodder, for instance, playing with four soldiers is impossible as the game becomes unbearably slow as soon as they all start firing. Putty Squad is generally too sluggish to be enjoyable.
I've tried a couple of tricks such as setting the NOCACHE and NOMMU tooltypes, to no avail. Is there anything else I should try, short of going back to an 030?