Controller Config: C-Stick jitter

[sl23]

You see those descriptions make sense to me but that is definitely not how they work, least for me!

W and H don't restrict where the cursor goes, they reduce the sensitivity of the C-Stick movements.
When W and H are high value then small Stick movements are required to move the cursor, but this is hard to control.
Low values of W and H make for easier control by using full range of C-stick movement.

C does seem to have any effect that I can notice. Low or high values do not change where the cursor rests. It always returns to bottom left of the screen.

DZ does work but set it above zero and it makes the cursor erratic when moving it. The reason being that when trying to make small movements it borders on the DZ and keeps flitting between bottom left and the position the stick is at. Hence I set it to zero. But I do require this to be higher as my stick doesn't sit centrally. This causes slow unwanted directional movements depending where the stick rests. Normally this is left or right.

Either way, no matter how I set these values, I cannot achieve the required function. The cursor moves back to bottom left regardless of values when stick is at rest. Certain values make it rest at bottom right. Is that normal behaviour? I suppose it should be to avoid it getting in the way when at rest.
But the cursor never functions as I'd expect:
move Stick=move cursor.
let go of stick=cursor rests at that position.

Relative Input is ticked and has helped tame the erratic behaviour.

Thanks for your guidance.