- Legacy ID
fire MK6 flare round at night
Try turning cloud cover to max, and I think you will see a slight change in ground illumination when using flares. So the problem is not that they have no illuminating effect, but that it is too weak.
Part of the problem is also that the flares either deploy to early, or burn out too fast, so that they never get close enough to the ground to provide useable illumination.