IPad mini and iPhone 4s slow home wifi

Question

I have 2 iPad Minis, 2 iPone 4s' and 2 Dell laptops running windows 7.  Using Speedtest, I'm averaging .50 down and 1.05 up on the Apple devices.  On the laptops I'm averaging 15.0 + down (32'ish at it's peak) and 1.05 up. The apples were operating at a higher speed a few months ago, but as of late are just dragging.  I thought the issue was my Netgear N600 router, so I replaced it with a new Airport Extreme.  However, speeds on the apple devices have not improved.  One thing to note, every once in a while (usually in the early morning) the Apple devices do rival the laptops in speed.  Makes no sense.  All Apple devices are up to date on operating systems and the Airport Extreme is using all default settings.  I would expect some degradation on the handhelds, but everything else on our wifi network (PS3, wifi blue ray, Nest, Kindle) are all working w/o issue.  Any ideas why the iPhones and iPads are performing so poorly on the network when using an old Netgear and a new Airport Express?  thanks!

Answer 1

when I use problems with itunes and windows then I uninstall itunes
then I reboot
then I use regedit and search and delete all related to itunes
then I reboot
then I reinstall itunes