So I had a Mission Generator mission that I liked in Warthog. I brought it over to P-51 and add smoke that would trigger with the proximity of the P-51. After awhile I got bored so I added 3 flights of 2 Mi-8s. They just fly around a 7 km radius at 500 and wait for me to throw .50 cal their way.

Here's the issue: The Hips are 20 miles from Lochini (the P-51 takeoff point). But even from that distance the frames cut by half whenever I look in the general location of the Hips 20 miles away. I've moved all about the map and the frames slow only when looking at the quadrant occupied by the Mi-8s, even at long distances and even when a ridgeline separates me from any posibility of seeing the helicopters.