I recently found this on Reddit while looking into why jellyfin is effected so much by latency. I found that this worked and thought I would share it because it is generally applicable, takes five minutes to setup, and helps a lot with bandwidth on higher latency connections. I admit I am not sure of the technical stuff behind this, so if anyone would like to chime in that would be much appreciated.
https://en.wikipedia.org/wiki/TCP_congestion_control#TCP_BBR
List some issues, but only earlier version, not BBR3
BBR1: