Back on topic of the Ki-84. Spectacular aircraft that has an .. interesting... flutter issue which doesn't seem to be specifically recorded anywhere IRL (from what I've seen personally).
I've flown the Ki a little (nothing compared to Ink or nrshida) and made a personal note: Don't get the Ki over 400.. The Ki feels like a spit/K4 hybrid that excels at low speeds (like the spit and k4) but dislikes high speed to a much greater degree than the spit and k4.
I was usually too low and surrounded by too many red guys to get fast enough to rip things off, but it did happen a few times

It certainly doesn't feel right to always lose both ailerons/elevators simultaneously at exactly X speed with Y G-load on cue ... every time
