Every time I find myself being shot by Yak-9K or 9T, I have absolutely no sound of its engine. It’s basically teleporting above me and then killing with a single shot.
I also would like to adress M107 shells (155 mm HE), which do no harm against most vehicles. I had several games, when I shot barrels of some light vehicles, such as leKPz M41, and it didn’t even make the barrel yellow. The rest of the projectile simply dissappeared. Same goes for overpressure: it just doesn’t exist now.