In the place where I live, networks get heavily congested during peak hours. Using kmod-bbr with fq_codel setting makes a huge difference in speeds to VPN's etc during these peak hours.
I've noticed an annoying problem though. If you try to do any SMB samba transfers over this VPN connection while BBR-fq_codel is enabled the samba speeds are capped at like 100-300kB/s. (The SMB server is a windows machine)
When I remove the kmod-bbr package, the samba speeds go back to max. BUT when the net gets congested, I get much worse VPN speeds.
I'm using Softether VPN on the OpenWRT router. CPU isn't the problem. Traffic other than SMB can go full speed over the VPN.
I'm running 19.07.8 and 19.07.7 builds. I've tried kmod-bbr on three routers, two kinds, and I get similar results on all three. It works great as long as I don't need to do any SMB transfers.
Thank you for reading and commenting. I really appreciate it.