Greetings. I discovered a solution for those of you who are having intermittant WyFi problems using IOS 8.0.2. This has solved my streaming and downloading issues 100%. Again, worked for me but your results may vary. Do the following:
hit the more info button under the network you have enabled
swipe down to the DNS field
double tap to invoke the edit capability
Use the roter to move to edit
swype up to select all and double tap
swype or tap down to your keyboard
enter the following DNS: server: 220.127.116.11
Back out of settings using the back button
Restart your phone or IPad etc.
Shazam man you should be streaming and downloading at speed and range that you know and love
It's ironic but the DNS is google.
Hopefully, Apple will address this issue ASAP.
Let us know if this worked for you including device and model.