silent hunter 4 spawning ships on top of each other?

[Bishie2]

So though my any hours in SH4 I have seen ships spawn on top of each other buts its happening at times now when it crashes the game and I'm wondering why the game does this. This is what happens I get a radio report about a large convoy so I move to attack but as I'm still surfaced i get a radar contact and it shows as a large convoy. But its just one ship so i move a little closer and then i get a lot 10 radar contacts all of them on top of each other then i get a grey icon of a ship that's sunk. then a minute later the game crashes. No clue why this happens and I cant find any thing about this. I've also seen the game spawn about 20 destroyers and one passenger carrier in one area. Has anyone else seen this or does anyone know why this happens? I'm running 3 mods in JSMGE they are Pacific sound mod, Free camera mod, and Midway Career with balao 1941. if those could be causing this who knows thanks to anyone that knows anything about this
-Bishie2