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#1
USB WiFI adapter seems to be bandwidth limited? Weird
Recently my download speed has diminished seriously. It used to be very high and now it is 4 MBps according to several Speedtest sites.
I have 4 computers in our home: wife's, TV room, my desktop and my laptop.
We have ATT Internet with 24 MBps download speed.
Two of these computers (my desktop and laptop) download at 4 MBps and the other two download at 29 MBps.
By swapping the Wifi adapters, the speed reduction follows the USB adapter.
I was not able to figure out why this just happened. I know I got very high speeds in the past, but lately things seemed to slow down.
I tried as many debugging steps as I could even full uninstalls and re-installs, but I could not get past about 4 or 5 MBps download.
I bought a new WiFi adapter for the desktop and the problem went away, but the laptop has a built-in Wifi on the motherboard. I guess I could still install a second one externally if I need it.
It is mysterious how two different WiFi adapters on two different computers will suddenly misbehave like this.
The WiFi that mis-performed was a Netgear WNA1100. I replaced it with an ASUS AC-56 - a nice dual-band USB 3 adapter.
The Wifi in the laptop is a Qualcomm Atheros AR956x device.
The device drivers were up-to-date and all our computers are at the same current version of Windows 10 Pro 64-bit (15063.413)