The basic functionality of the generic MS driver isn't the problem, it's failure to do basic troubleshooting correctly. There are plenty of Intel Windows 8.x systems with working USB 3.x ports, and working USB 3.x ports under 10 doesn't seem to be a general problem either (it worked fine on my Intel based laptop when I tested Windows 10). I'm not sure why people make these things so difficult.
If things have really been screwed up, it can be slightly more difficult to repair it. You may need to delete the device then re-recognize it and/or use the device properties to check if MS has it online. Then follow the usual troubleshooting steps for loading the MS driver. If you are upgrading from Windows 7 you'll need to uninstall the XHCI USB 3.0 drivers. Without a USB 3.0 driver installed, the ports will only work at USB 2.0 speed since that's the only part of the port which is active without a USB 3.0 driver. So by downloading and running this EXE provided on the VIA driver download site, you should end up with two new devices showing up in Device Manager for USB: (1) VIA USB 3 Root Hub. VUSB3HUB.SvcDesc 'VIA USB 3 Root Hub Service'. The hacked driver is available in order to get rid of that yellow flag. VUSB2\CLASS09&SUBCLASS00&PROT02.DeviceDesc 'VIA USB 2 MTT Hub'. The yellow flag on the device indicates the driver isn't installed. Your first link explained the problem well enough to understand.
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