Jerking when shifting

Hi to everyone, i've got my f56 std cooper since november but i've got a small doubt. Ever since i got it i can't get to shift quickly from 1st to 2nd gear comfortably, either i have to release the clutch slowly (like 2-3 seconds) or the car will jerk a little bit, even if i give it a little gas when releasing. I can't get to make "automatic like" shifts only from 1st to 2nd, especially when im driving fast. Is this normal or should I get it checked?