It lags as it takes advantage of a start clutch to transfer electric power as opposed to the current gen CVT which takes advantage of a torque converter. It was once a challenge during the 2nd gen Honda City CVT that has an identical setup. Anyhoo from 2014 right up https://codypuwxu.luwebs.com/34861315/the-smart-trick-of-cvt-proton-that-nobody-is-discussing