While it shouldn't be happening, it's said to be caused by a deadzone in the game for the Logitech wheels, PD needs offer a deadzone calibration setup and then bam, no more oscillation, for example the Fanatec wheels have a in-wheel/on-wheel setup system and w/ a bout 10-20% deadzone per how the ISR team set theirs up, no oscillation what so ever and looked like still performed beautifully in terms of responsiveness, and the Thrustmaster T500, steady as a sled, no oscillation.
So yeah, shouldn't be happening, but sounds just hold on to the wheel, is it that difficult to? I mean like does the wheel really force the oscillation or is it just like a slight feathery feel?