I'm using the Vanilla Unified NYGM/Grey Wolves Campaign files, however I have modified them a lot. I found that too many mines causes a problem (rendering 3D models an such) and believe me, there is a hell of a lot of mines in there. So I deleted about 90% of them and beefed up those that were left in the places that really needed them. I also did away with the NLOL (old liner) as it was to all intents the same as Sergs Heavy Transport. I then deleted all the PC Trawlers from AXIS navies and replaced it with the Vorposternboot. I also deleted all the B24 Bombers that fly over all the sub bases at the beginning of a patrol an bomb the crap out of you (seemed to creat a hell of a lot of CPU latency). I then extended the range of AXIS Aircraft patrol routes to incuded sorties over Allied postions. I then added the Autralian bases and ships to the Indian and Pacific oceans with convoy's to the middel east and even to the UK. I also have AU shipping going threw the Asian minor regions. AND it works, now as to which part FIXED what part may have been broken - then your guess is as good as mine!