I am running a very basic setup of OpenWrt 19.07.03 on an Archer C7 v5.
Download speed is about 550 Mbit/s with software flow offloading enabled (provider assures 500 Mbit/s - so I am really happy with that) (HW flow offloading currently disabled - cause I did not find if the C7 v5 is supported)
My upload speed is just ~12Mbit/s while it could be 25 Mbit/s (that's what my provider claims)
All this was measured from a wired PC - LAN cannot be the bottleneck. I tried several measuring sites and they are all pretty much delivering the same values.
Any suggestions what settings I could try to tweak from the standard setup?