10.x.x having slower performance than 5.5.x

Hey guys,

I had MariaDB 10.0.21 installed on my PC for developments, I noticed it was running slow, but I thought it was my machine, then something I wanted to test required MySQL 5.5.35 or newer and MariaDB was reporting as 5.5.5-MariaDB-10.0.21, so I changed to MariaDB 5.5.45 and everything started speeding up in terms of development, can you tell me why is that and is there anything you can do about that?

Thanks.