So I was trying to test out some fleet ships against a fixed defensive setup and a hit a few problems. First, to keep the numbers down, I'm using a bunch Gravity Turrets and Tachyon Turrets, 150 mines, 2xMini-Forts, 25% of my cap of offensive turrets and tractor turrets, 50% of my cap of triangle ships and starships, and the full cap of Force Field Is. So that's what I'm spawning a wave against, and I want to see how many ships it takes to crack it. I'm using no micro at all, not rebuilding any lost mobile units, and I have 5 Engineers and Rebuilders on FRD with settings set to replace them.
Is it a bug that I can fairly reliably stop a 900 Mark IV Fighter wave with just the above? Basically a combination of Force Field pining and the AI not liking to shoot at Tractor Beams under Force Fields causes them all to sit there while I kill them with turrets/forts from outside their range. I can kill a hilarious number of SSBs too, doesn't have to be just fighters. Basically, unless there is a carrier, I can kill in the neighborhood of 600-900 of anything not tractor or force field immune.
Save included for your enjoyment. It takes a little bit for the fight to stabilize, but you can tell its over when the force fields stop taking damage. Sometimes 50-100 sneak by, but if you wait long enough generally they'll die to sniper turrets. Sometimes it all collapses, but there shouldn't even be a question. That volume of Fighter IVs can kill a Force Field in something like 4 seconds, and there are only 3 they have to get through. Note that there aren't enough tractors to hold all the Fighters, about 180 are just pinned inside the Force Field. F3 the Fighters after it stabilizes and you'll see the have the Tractor Beams targeted, but aren't actually shooting them.