Once I get enough RPM to take off, my helicopter will start banking/pitching right, and it takes about 75% left x-input to counteract, which at that point makes the helo act like its anti torque is blown out. Can't maintain straight flight, even with trim, and auto hover is the only thing that keeps me from crashing instantly.

Starts just when I have enough torque to take off with rudder, then goes into a hard, uncorrectable bank.
Doesn't matter if I am using a joystick or mouse/keyboard.