After getting loads CTD etc I decided to try something.
Originally I had the first AH2.0 exe installed plus the 5 patches.
a) Uninstalled AH2 deleted folders etc that were left behind ( so uninstall is a little fugged ).
b) Downloaded the latest AH2 exe v2.5 (all in one).
c) Installed it.
Played for way over 12hrs now without one CTD or any major probs. Stutters will vanish once I have all skins again.
Next step is to install Mitsu's sounds again . If CTDs start up again, guess we may have found the culprit.
If the CTD's don't return, culprit is original AH2.0 exe plus the 5 patches. sometimes you are better with an all in one file than 1 file and numerous patches to same level.