The client now tries to detect if it's fast enough to process the
state updates usually send every 500ms, and if not notifies the
server to throttle the rate (e.g. to 1/1s, 1/1.5s etc).
Additionally, since the terminal tab of the client turned out to
be quite CPU intense when line number calculation, filtering etc
is enabled, the terminal tab now also falls back into a bit less
fancy mode if it detects its being processed too slow and optionally
even disables logging completely during printing (where a lot
of log messages need to be processed in a minimum amount of
time).
That way the UI should stay responsive even on very low powered
clients (e.g. chromium on a Pi), while printing.
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