The default macOS SSH client now floods connections with SSH2_MSG_PING “chaff” packets - a 2023 privacy tweak meant to hide keystroke timing. Nice in theory. In practice? It tanks performance for real-time terminal apps like games built on Bubbletea over SSH.
Turning it off - either through client flags or by tweaking Go’s ssh lib to stop advertising support - cut CPU and bandwidth by more than half.
