sh3sim.act causing CTD

Currently I'm into stock SH3 + additional ships mod, getting ready for a long online campaign career in steelsharks comunity with wolf packs tactics included

It's just that I noticed frequent CTD causing this modname: sh3sim.act involved.. I made a single player map for myself and added lots of friendly and hostile ships around to make the action look more immersive
But because of CTD's can't enjoy my creation since I'm getting CTD almost the same moment everytime if I try it all over again
Can it be that I added too many ships in one place and can this be the cause of ctd's ?

Thanks in advance.