... Does it get better at night when most everyone has gone to bed?...
Nope, that's the thing. There are probably only five people in the building (residents) that even have a computer, much less connected to the Internet. It doesn't matter what time of day it is. It acts more like what you experience with a memory leak. Or as if, for some reason, Windows itself is choking it down. When I reset the wireless adapter the connection speed goes back to 144.5 Mb/sec.
The other thing is that even when the Intranet connection speed is at its fastest, the Internet connection is slow. Less than 4 Mb/second. The IT guy that installed my wireless adapter was getting between 10 and 12 Mb/second on his laptop which was right next to my desktop tower.
. ... Do you have a wireless phone or other wireless device that works on the 2.4 or 5 GHZ channels?...
My cordless phone works on 5.8 GHz, but it's not connected at the moment. Otherwise I have no other wireless devices.
This WiFi network is brand-new and I expected that there would be a few bugs that needed to be worked out with it, but I have the same problem with the old network. That's what leads me to believe that the problem is either a hardware or a Wendy's issue. That, and the fact that nobody else that I know in the building has the same drop-off problem with their Intranet connection.
The others may be experiencing the same slow Internet connection, but since none of them use their connection for streaming video (Netflix), they may not know it.
No matter how I look at it, I should be able to get the same Internet connection speed out of my desktop at the IT guy got on his laptop sitting right next to my tower. Wouldn't you agree?
Thanks again for all of your help. -- SCB