The "dim spots that represent nothing" feature drove the dimming with getRowStyle
and called api.redrawRows() on EVERY spotStatus update to re-apply it — a full
grid re-render on a firehose of status updates, which pegged the CPU on a busy
cluster (reported as PCs slowing down since 0.23.6). Move the dimming to a
defaultColDef cellClassRules ('opacity-40') that the existing light
refreshCells({force:true}) re-applies; drop redrawRows and getRowStyle.
rouggy
57a9bed145