...imagine this...
You have a joystick you can move a certain number of points, in this case 60. 30 forward and 30 back.
If you trim you plane to fully possitive (nose up trimming for low speeds) and you fly ANY faster then that speed your plane will want to nose up when you have you stick centered. That means that you only have to move the stick back say, 20 points in order for the plane to give full elevator deflection. That means you've just removed 33% of your sensitivity, your fine adjustments. This will make you snapstall far easier. I am GUESSING this is what makes you snapstall. An educated guess I should say.
I've never experienced the mentioned problem in the Ki84. Of course it DOES snapstall easily, there is a very fine line between controlled flight and snapstalling in it. In that way it reminds you a whole lot of the 190.
I never use combat trim my self. However, it will NOT make you turn either better or worse (in ANY plane) UNLESS you are flying too fast to be able to pull up without using manual trim. It does NOT make your plane turn any better in low speeds, it merely takes the forces of the stick. Anything you may "feel" makes it a better turner without combat trim is just that, a feeling.
Important to mention is that combat trim is ment for a plane without anything else down, ie flaps or gear.
The thing I don't like about CT (part from removing one aspect of realism) is that once you go into very slow flight, the CT will try and trim you up a little bit more thus effectivly decreasing my "sensitivity points" further, making it harder to aim and harder to stay in controlled flight without snapstalling.
Not sure if I made my self clear, so ask away if there was something anyone didn't understand.
