what's up with nUI memory usage?

[ChemTheThriller]

When I first loaded nUI onto WoW it loaded up and only used like 7-8MB. the second time it started at 6MB and moved up .10 every second until I check and it was between 18-20MB...

what's up? Why does nUI load in .10 chunks continously? why did it only take up 6MB before now it's pushing 20MB? I have a sorry laptop and at the moment cannot get a new one due to my military situation. 20MB puts me at 8-10FPS unless im looking towards the ground which gets annoying after awhile... I really like nUI and enjoy using it, certainly the first time... any ideas?