R8300 - Desktop WiFi Constantly Disconnects w/ "The default gateway is not available"

So I wanted to follow-up. I had continued researching and troubleshooting. Update drivers/chipsets, etc but still no luck. However, I came across something the other day that I believe may have done the trick oddly enough and I wanted to post it here in case someone else runs into a similar issue as it may solve a headache for them.

I went into Device Manager under Network adapters and clicked on "Update Driver Software..." but instead of searching automatically for the driver, I clicked "Browse my computer for driver software" and then clicked "Let me pick from a list of available drivers on my computer".  I de-selected "Show compatible hardware", I selected "Intel" for the Manufacturer and selected the "Intel(R) Dual Band Wireless-AC 7260 (Microsoft)" instead of the (Intel) one. So far it's been 48 hours without any disconnects. So the Driver Date is now 22-Feb-2015, Driver Version 17.15.0.15, Provided by Microsoft and Digital Signer: Microsoft Windows. Funny how rolling it back to the original install didn't work but the end-state solution still involved rolling back to an older driver provided by someone other than the manufacturer.