New member but please help!!!

Just got my first Clio 197 and absolutely love it!!!

I have just driven it home quite a few miles and it seems fine, but the only thing I found was that when driving at speed changing from 2nd gear into 3rd it seems a bit crunchy and not as smooth as the other gears. When changing from 2nd into 3rd at slower speeds it felt smooth and the same as changing through all the other gears. Is this normal?

Please advise as I am worried there now may be a gear problem with mine!

Many thanks!