BBR is developed by google for “significant bandwidth improvements, but also lower latency”. Especially the bandwidth improvements could help streaming media. It’s available in the linux kernel since version 4.9, so should be usable for -ng builds.
Checked that it’s not there right now:
Kodi:~ # sysctl net.ipv4.tcp_available_congestion_control net.ipv4.tcp_available_congestion_control = cubic reno
To the devs: Kernel settings needed for it are CONFIG_TCP_CONG_BBR=y and CONFIG_DEFAULT_BBR=y