Prompt CM11 Issue

Hello everybody! I would have asked these questions in the cm11 thread, but it seems I need to reach 10 posts to do that.

I am experiencing a rather unpleasant slowness regarding the launcher. I'm using galaxyfreak's build 4 of the ROM. Apps and games seem to run smoothly, but when dropping down the status bar or scrolling through the settings or contacts, it's not so smooth at all.

And I would also like to ask how do I activate ART?

I've changed the ro.config.low_ram thing to false, but it's still slow. It's better but it's still slowish.

CM9 and Sense 4 ROMs are buttery smooth but I enjoy having the latest version of Android.

I'm using a class 10 sd-card, by the way.