When you remove the accelerator workbench needs to use some of the chip ram instead of the fast ram hence why it shows 1.5mb on the bar at the top.
If you run sysinfo or whichamiga or even show config (of workbench) it should show that the Amiga has 2MB chipram.
You are not doing your amiga or your accelerator any favors by removing it every time a game does not like it. Do not do it.
Have you tried WhdLoad? That will solve all incompatibility problems with older games.
Alternatively you can use Degrader or Relokick 1.4 which boots the Amiga into Kickstart 1.3 and can even disable the CPU cache.
Or you can go into early startup by holding both mouse buttons while rebooting and then select "Disable caches" or "Disable CPU caches" - i forgot and selecting Original instead of Best or Enhanced.
