And which users of TP-Link gear are you trying to impress with this statement? See, this is a user forum and if nobody does respond to your description of non-deterministic behavior of your installation, then almost certainly it is not caused by the product itself, but rather by your setup. I guess it's caused by the Windows platform as usual if it comes to intermittent, non-deterministic behavior. Microsoft is a true specialist with decades of experience in this area.