Hello, everyone, I'm back. Sorry I disappeared, but my job took me away for awhile. Here's an update on my situation:
I upgraded to Windows 10, and that has solved the update problem. I've set updates to run when I want them to. Yay!
But! Although I am able to connect to wifi now, all connections are interminably slow. I was going to buy a router, however, I decided against it for this reason: Many public wifi spots use 2.4GHz, and I find that when I'm out and about with my SP3, I have the dreadfully SLOW connection speeds, just like I do at home. So, it makes no sense to buy a new router that has the 5GHz option, unless I only ever want to use my SP3 at home, which, heh, I don't. I bought it so it could travel with me, otherwise I would have invested in a new desk top computer!
Someone asked earlier why I set it to 2.4GHz rather than Auto... because 1. My current router doesn't have 5GHz, and 2. A troubleshooting guide suggested changing it from auto to 2.4GHz to see if that would help. (It didn't). So, it's back to Auto.
Somewhere I read to change the USB selective suspend setting, however, since updating to Windows 10, that option is no longer available in the settings. I did find a way to make it reappear by changing the registry, but I haven't progressed that far yet, and I'm not sure if that is really the problem anyway.
So here I am again. I can connect to my wifi router at home, (and as a reminder, all my other devices that use it work fabulously well), but it is soooo slow. Outside of my home, any wifi connection I successfully connect to is just as ridiculously slow. I cannot change the world's wifi, so I need to fix my SP3 so that it can effectively use ANY wifi out there, like it should. At work, all my coworkers use their laptops, phones, etc. on the company 2.4GHz wifi just fine. Not me : ( I show up with my "state of the art" Surface Pro 3 and embarrass myself with how poorly it performs. : (
Let me add that if I sit about 5-10 feet directly in front of my router, I get pretty decent speeds. However, please don't recommend buying a new router again as the end-all solution. Although I will eventually do that, it won't solve the problem of slow speeds everywhere else.
I promise I will be active daily on this thread as I only have 10 days left to return my SP3 on the RMA that I requested. I'm all ears for exploring anything that will fix it. When it works, I really do enjoy it, and I'd like to keep it. Thanks!