Razer Naga in World of Warcraft 4.1

Im trying to play world of warcraft 4.1, on a 2011 MBP 15" 2.2 i7. The game runs smooth enough, 60FPS in raids and HC, but the problem im getting is the my mouse. I'm using a Razer Naga, with in OS X it works well enough, but in WoW it feels very jumpy, makeing moving ment quite hard. I have the Mac drivers installed and have look on some forums but to no avail. Is it the Mac setting comingin to conflict with the naga settings or the wow client having issues with an external mouse?

I'm very new to macs as well so any surjestions would be great no matter how "basic" they may be considered.

Thanks