iOS 6 upgrade has paralysed wifi

iOS 6 has paralysed the wifi on both my brand new iPad 3 and iPhone 4S. I made the big mistake of thinking Apple would not put out something which would have a detrimental effect on these devices and upgraded last week. HUGE mistake. My iPhone started slowing down streaming radio apps. The next morning after I "upgraded" my iPad it took it 40 mins to connect properly to wifi. Today, it took both devices an HOUR to connect to wifi. It would connect for 3 secs then cut out, then 7 secs, then cut out, then 5 secs, then cut out- this torture went on for an hour. I am absolutely furious - this is the first time I have ever posted to a forum but I am so annoyed I had to let Apple know. 1999 internet speeds in 2012 are just completely unacceptable. I had no wifi problems until I upgraded to iOS 6. Had anyone found a solution to this? I'm very angry I paid so much hard-earned money on these products for this to happen! Most importantly, has Apple acknowledged this problem & are they working on a solution?