A6210 keeps disconnecting

Hi there, the same issue at my end. 

I see many people reporting this issue but noone is willing to follow your suggestions. Let me work together with you to sort this out once and for all. 

1. Router -> TP-LINK Archer C6 WIFI AC1200
I think it has latest drivers, but I'll double check. On the other hand, none of the other devices I use (couple of laptops or mobile phones) disconnect from the network. Only A6210 keeps unplugging - when it happens I hear it being unplugged... like I'd physically remove the connector out of USB 3.0 port. This could be potentialy USB 3.0 Power management feature. 

2. Latest drivers applied (1.0.0.39)

3. The guide is obsolete as there is no such option in the latest drivers. That could be OS thing as well. You're clearly using Windows 7 as an example while people are using Windows 10 for years now.

Extra options:

I've just forced 5Ghz only mode, USB 3.0 only mode in advanced settings. 

In Windows10 Power Options, I've already had Wireles Adapter Setting, Power Saving Mode set to Maximum Performance - despite that the connection was dropped for me 10 minutes ago.

What I've changed in that section just now, is USB settings, USB selective suspend setting. It was set to Enabled and I've just switched that to Disabled state. 

I'll observe if anything changed as a result of my actions. Definitely be back with the feedback. Please, don't mark this topic as resolved untill you hear back from me.