Frame Loops On Menus/ui

So I'm trying to get an image to rotate on my Main menu, and it turns out, that using frames, it takes 400 frames to achieve the speed I want....

How will this affect loading times?
Like, is BB creating 400 images, then sequencing them? or is BB literally rotating the image, and the 400 frames is just a reference for us?

I usually only use 40 ish frames, but I need the rotation to go really slowly.

Thanks.

 

Can't you just use Angular velocity to get the desired effect?

 

How do you do that in a UI node? Or am I completely missing something here xD

 

Just use a game scene as a menu. It will make life easier.