Wifi takes an eternity to reconnect after "wake"

yeah this is another bug from around beta 5... when leaving the phone idle for a while and trying to wake the device, wifi would not appear till like 8 seconds later whcih is very annoying, and if you want to do something fast like check an email or something you have to use 3G or LTE till the darn thing hooks back again wtf?

now i've noticed this isn't a recurrent issue sometimes it grabs wifi like iOS 6 sometimes it takes less 2 or 3 seconds, but after a while not using the phone and waking it up behaviour resumes

now I know this issue has lots of angles to it, how far you are from the router etc

all these tests i've made have been from the same spot, it started to happen back in iOS 7 beta 5, yeah I haven't had the luck of making a clean install because there isn't iTunes 11.1 for windows yet, I hope this might resolve all my pains.

for what it's worth it has never happened to me i've had this router since the 3GS days