Yes it is. These coins will need to implement a blockchain database eventually. For now more swap space may work, since most of the block chain is never touched.
Oh right, I forgot about saving. You will need more RAM or waiting for a block database to be implemented to get any improvement.
Run the daemon with lower IO priority and it will smooth things up, eliminate IO race and cut off your blockchain read/write time significantly
ionice -c 2 -n 7 bytecoind
He just gave us a solution for those huge ram usage and he is a newbie registered in 2013 but the first post is suggestion of cryptonote which is almost a mystery for more than half of the people here .