I checked the tps, changed it 3 times even (first one had dead spots).
When at idle and no load, the idle surges on steady light throttle. When on load (like on highway or cruising) if I apply light throttle, its like an on off switch, there is no smooth transition. i guess at less then 15-20% throttle, its like an on and off switch, very abrubt.
Then when I press, or even just lay my clutch foot on the clutch pedal (maybe like pressing 10mm) the surging idle stops on no load, and at cruising, you dont feel that abrubtness from the throttle.

I seen other threads where people idle was surging with the clutch pressed down, but mines surges when it is no depressed.

Its a S5 TII btw