Don't like IOS 7' can i downgrade?

Question

I do not think iOS7 is suitable for iPad 3. The processor is not coping at all. It only just coped with the retina display before, but is really suffering now. The screen keeps freezing, button activations take seconds to respond or have to be pressed several times before responding. Internet usability is really slow and sometimes IOS7 shuts down the safari operation midway through usage. The new screens are very hard to see, dark grey text/legends against a black background, white skinny text against a light background. Buttons and screens look really awful to say the least, makes the screens look like a Windows 8 or Android OS (really tacky). Trying to look at my collection of photos is a very disappointing experience with small photos being displayed against a bright white background, the collection of photos have been minimised  to about 1cm in size and grouped together so that it is almost impossible to find or select one (cannot resize them or alter the background colour).
Just the looks of the thing makes me not want to use the iPad at all. It really does look awful, especially as the original system looked so good. Surely there should be the option to have the 'classic' style
Can i have the original (working) OS reinstalled? Surely there is a law that gives me an option to return an item within a certain period. I consider that i have been mis-sold this OS as the operating system is part of the package that i paid for when purchasing this expensive tablet (the tablet will not work  without the OS).

Answer 1

Two things other users have used to improve efficiency of iOS 7 on their iPads,
1. First thing to try is to reset your device. Press and hold the Home and Sleep buttons simultaneously until the Apple logo appears. Let go of the buttons and let the device restart. See if that fixes your problem.
2. Reset all settings
Settings > General > Reset > Reset All Settings