The difficulty in the rubber band effect if the gas pedal is pressed in which the motor RPM jumps around 5000 RPM and stays there, causing sounds which might be heard inside the cabin, has also been fixed by Proton through the SAT characteristic. A. Rubberband outcome is from CVT's https://cvtproton64174.ampblogs.com/a-secret-weapon-for-cvt-proton-70425001