There is something very wrong... there's no reason you should have such a low frame rate on the solo player panel while doing nothing but sitting on your mount. Something else is going on.
I do see the frame rate difference with nUI off, but still. I can understand people having issues in the 25 and 40 man raids with nUI5, but not solo.
So.... the question is what's the problem and how to fix it. It does appear you've done some pretty heavy customization of the nUI unit panels, but even that doesn't seem "right"
Out of curiosity, if you saved your current nUI and WTF off into another folder so you can recover it, then follow the directions in the clean install FAQ (
http://www.wowinterface.com/forums/s...ad.php?t=21716 ) what frame rate do you see with only nUI installed and unmodified?