I would not recommend to go back to windows 7 it is much slower, in all regards.
What are your sources for all regards - or is it just a personal opinion?
I have seen benchmarks, cause on work I told my employee that Windows 8 is faster, he told me yes it might be but not on our computers cause at work we did use mostly "give away" computers with Pentium 4 and so on,... I then did show him benchmarks where they had compared windows 7 and windows 8 on an 7 year old computer, windows 8 was noticeable faster in all regards even on an old computer.
Even on a faster i7 I still feel the windows 8 is faster and more snappy..but it will be more noticeable on an older computer for sure.
I also get a lot better DPC latency results on windows 8 which is important if you are working with audio.
I understand that people want to boycote windows 8 because of the Modern UI but for me it is what is under the hood that matters to me... the windows core i simply faster. After a few weeks Mordern UI/Metro did not bother me at all..you learn a few tricks to make it faster to use too..
One simple trick I use a lot is I have the desktop icon on metro on top the left, the reason Is if I have it placed in that position I only need to press the enter button to enter the windows desktop and windows button on the keyboard to get back.it is fast to use..