This is normal, this coin only stakes 6% per year and it builds up slowly as the wallet automatically breaks down your coins in to many small inputs, you will see after a couple of days the stake amounts getting larger, and more frequent. Also, network stake weight is relatively low against POW. We're going to release a new configuration file that will speed up the breakdown process but things are working fine it just takes time. People have become trained it seems for the 20% a month style coins, that's a different coin model, not ideal for long term growth.
It's not so much as being accustomed to high % stakes. I've personally never had anything too high as I don't see the point (hinders stabilization). However if the staking is as you say where it starts small and the stakes amounts get larger over time, that is different than what I am accustomed to. Usually they start big and get smaller over time if a wallet is left running. That instance is where I have run into problems in the past, where i generate so many transactions that it freezes the wallet and Iam forced to create a new address....if i can even get the wallet to sync.