TP-Link TL-WN881ND slow suddenly [Ubuntu 17.10]

[shinyrabbit]

Here's my wireless-info output: http://paste.ubuntu.com/p/hDrdfNg89C/

Essentially, my WiFi usually runs at about 120 MB/s download speed. Suddenly, it's dropped to ~3 MB/s, while it's still high at 70 MB/s on my phone and other computer. I'm not sure this is an Ubuntu specific issue, as I dual boot and the speed is also slow on Windows. I'm using Ubuntu 17.10, and this is my wireless card: https://www.amazon.com/dp/B0079XWMEI..._qBdtBbY7ZDGE8 (TP-Link TL-WN881ND N300 PCI-E).

It's been working for a good half a year at least by now, and i haven't installed any major updates to my computer recently. The normal stuff, rebooting, restarting the router, etc. all tried of course.

I haven't updated the drivers ever--honestly because the instructions are intimidating, and I don't want to mess anything up further.

Any idea why my connection is so slow now?

[mörgæs]

Hi, welcome to the fora.

Before digging deeper into the problem I suggest a fresh install (no upgrades) of 18.04 using wired internet access. When that works and all updates have been applied it's time to focus on the wifi.