View distance for enemy ships

I seem to have accidently installed a mod where my enemies have a bigger viewing circle (to much so) can it be the environmental mod? I would like to lower their viewing circle, for ex. at night they can see me coming a mile away which is unrealistic, sure it was to easy at stock but now it's to hard.

Anyone know where you change this and what file/files does this, or maybe lower my own 'emmison' globaly for all ships so they can't spot me so easily.

I don't know what mod changed this, I installed to many at once and it happened.