> might be a software issue

If your usb wifi card is an ar9271 then I can tell I have
several usb ar9271 wifi cards. One nano size. One
having a 4inch antenna. One having a longer antenna.
At distances about 10yards from the router they
are all equally fast and seldom disconnect.
That is on a debian 10 main distribution and the software package in
question is firmware-ath9k-htc 1.4.0-97-g75b3e59+dfsg-3.

I also have trisquel 8 64bit installed on a hdd. But I do not
use it. I mainly update trisquel. I have not experienced
problems about ar9271 running on trisquel.
I suggest, it is something about your software or
hardware. Can you test your wifi card on other routers
and computers?

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