Hey, TerryT thanks for replying.
I bought the car second hand at 36,000kms and was working fine didn't have any problems, I got it serviced at Hyundai a few months after and a few weeks after the service I started having this problem, it doesn't seem to be affecting anything that I know of. I haven't had any modifications besides instaling vinyl on the roof but nothing to do with the engine has been done.
I haven't gone to Hyundai because it does as you said, after that first jump, settles down and accelerates normally from stationary, perfectly fine at any other time
It does it on cold starts, on warm starts it's fine.
I live in Melbourne and its garaged so the car doesn't get that cold