Actually a ROM that has been softkicked into RAM (even chip RAM) is faster than accessing the ROM itself - RAM access time is much faster than the time it takes to access the ROM chips. Even though my A4k has 3.1 ROMS I still use blizkick to stick them in RAM (and fix many of the bugs in the 3.1 ROM).
Can't see why it would relocate the ROM to chip ram though - maybe your chip ram is being eaten up by something else - what screen mode and colour depth is your workbench in?
