I upgraded two laptops and a tablet a couple of weeks ago.
So far, so good. My Sony Vaio laptop keeps turning off the wifi adaptor when I wake it up, but it did that with Windows 7 too, and I’ll just have to take some time to figure out what the deal is.
I had the same problem. I solved the issue by changing the power option on the wifi adapter. Go to Device Manager. Open the Network adapters section, right-click the wifi adapter and choose properties. Go to the Power Management tab, uncheck allow the computer to turn off this device and change it to allow this device to wake the computer, save your changes and you’re done.