That's an odd problem you've got there Axe. Well, by oscillating i mean exactly that. The steering wheel will constantly keep turning direction and increasing the STM (nice shortie btw) beyond the deadzone sweetspot will increase the big the amplitude of the oscillations. But none of the above is relevent atm because you have this in your wheel already which is odd. Did you make sure to set the STM value to 5 decimal places? (e.g. 5% cannot be 0.5% but must be 0.50000 same as 0% must be 0.00000). Do you have any wheel centering enabled in the fanatec profiler? Just to test....when your stationary, does your wheel perform an unstable (i.e. self-perpetuating) oscillation motion if you induce a slide nudge of the steering wheel in either direction. Also is this the same when in motion?