Hello,
DRO on Tanoa...
Yea, after sometime, artillery support stops firing to the target, you call out the hit, artillery confirms all up to the splash, but nothing happens, the ammo never arrives, the time downcounter goes negative, and the available rounds count for the artillery remain the same, as it has confirmed the firing, but never did it...

Another problem I have is with Invincible Vipers...when I fiind them I can cancel the task...for example, I had one of them in a little room, launched him a grenade that exploded at his feet, discharged 3 full 30 round 6.5mm magazines on him at about 5 meters from him, and...he killed me...no way to kill him... howevere, not sure if this is related directly to DRO...