atheros ar9485 wireless network adapter slow connection

One minute everything is fine and then the next the wifi icon in the tray has the 'x' indicating that it isnt working. Qtl, choose manage and troubleshooting articles.

QUALCOMM ATHEROS AR9485 WIRELESS NETWORK ADAPTER TO BLUETOOTH.

QUALCOMM ATHEROS AR9485 WIRELESS NETWORK ADAPTER TO UPGRADE.QUALCOMM ATHEROS AR9485 WIRELESS NETWORK ADAPTER TO DRIVER.QUALCOMM ATHEROS AR9485 WIRELESS NETWORK ADAPTER TO UPDATE.QUALCOMM ATHEROS AR9485 WIRELESS NETWORK ADAPTER TO DRIVERS.What's the benefit of upgrading computers' wireless adapters from WiFi 5 to WiFi 6? Should i buy wifi antenna or get mobo with one I'm kind of at my wit's end here - I figure it's probably something with the USB on the reformatted system, as the adapter is plug-and-play. Seems to work okay, albeit without 5 GhZ support. I switched back to the Qualcomm adapter on my reformatted system.

Didn't work, and the USB adapter worked perfectly before the reformat anyway. I tried disabling the Qualcomm adapter in the device manager just in case there was a conflict/interference or something. Same result every time, so it's not a bad port. I tried switching the Edimax adapter to different USB ports on the reformatted system. Seems to work perfectly, so it's definitely not the adapter. I tried using the Edimax adapter on my laptop. I've taken the following troubleshooting steps already:

Strangely, upload speeds are around 45-50, as they always were. I did a speedtest and the download speed is around 0.25 MBPS (before the reformat it was around 90). I've run windows update until there's no further updates and everything seems to be working fine except the Edimax adapter. I just bought/installed a swanky new Samsung SSD, and I reformatted the old drive and reinstalled Windows 10 on the new one. The other is an Edimax AC1750 USB Network Adapter, which I bought for 5GhZ band support after a router upgrade. One is a PCI Qualcomm Atheros AR9485 Wireless Network Adapter.

Atheros ar9485 wireless network adapter slow connection