That "flying AT gun" video is 3 years old and ancient history because Iron Front has been patched pretty good since then, otherwise I wouldn't waste my time playing it because I never stick with flawed games.
For example only yesterday I gave away my X-Plane10 flight sim because it's a crock with too many longstanding bugs that they wouldn't or couldn't fix.
Incidentally I was on the payroll of CCS (Cases Computer Simulations) as a developer/playtester years ago and we turned out some good stuff-