I use a TP link Archer C7 v5 since a year, and recently I see slow down on download speed using wired (and wifi).
I have confortable connection on my box (wired)
down : 924Mbps
up : 396Mbps
But since few weeks, behing my Archer C7, the download speed slow down. I got a download speed near 800-900Mbps with OpenWRT 19.07.4 few months ago (with offloading enable), but it slow down drastically since some package update I think. I upgrade it to Last release (19.07.7), reset settings, re enable offloading (software and hardware as it was), but still have speed issue.
Here what I have behing the Archer.
Offloading software and hardware enable (wired)
Offloading software enable and no hardware (wired)
NO offloading (wired)
And the wifi is not better, but maybe due to another problem
On Archer C7, offloading software and hardware enable (wifi < 1 meter)
box (wifi < 1 meter, same laptop)
up : 388Mbps
I already read some post about speed issue, but without find any solution :
If someone have some idea, firmware update or any idea to fix that / thoses speed issues.