Every line of cluster traffic went straight to state: a spread copy of a 2000-element array, a slice copy, and a React render, per line. An RBN feed sends hundreds a second, so that was tens of MB/s of garbage in the renderer and hundreds of re-renders - and it ran whether the console was open or not, so the cost was paid for a panel nobody was looking at. Reported on an old PC where the UI had stopped responding. Lines are staged in a ref and flushed on a 200 ms timer, the same shape the spot handler already uses. The staging buffer is bounded too, so a burst longer than the console can show is not carried in full just to be sliced away on commit.
rouggy
b10a867125