Awfully slow when using :stream t

[turtle-bazon]

With specifying :stream t we can use callbacks with streams. So we can do read-sequence and write-sequence. Trying to implement echo server via stream. Seems ok, but comparing execution of command is different. Using stream is far more slow than using buffers.

time (cat /tmp/debian-9.8.0-amd64-netinst.iso | nc -q 5 localhost 3456 > /tmp/debian-9.8.0-amd64-netinst.iso.1)