I started a buglist thread at DCS with the missions. After a bunch of replays I now have to admit that there is very little perceptable performance difference between the two variations of the mission. For both, there is a significant hit when looking west towards the battle area which is many miles beyond visual range. I guess my question would be (and this may well apply to Ka50 and WH as well) why would looking in the general direction of something you can't see cause a performance hit? If its just general CPU drag because of units interacting than that would occur wherever one looks.