Source? Are you talking about wireless speed or wired speed? I am asking because I have never experienced such a huge limitation caused by the CPU bottleneck.

I have performed some simple tests using `iperf` tool on Archer C7 with OpenWrt and it was able to sustain wired network speeds of around 750 Mb/s and wireless speeds (IEEE 802.11ac) of around 300 Mb/s (maybe even more, but I do not remember exactly).