Just want to chime in to say that I also use range bars usually with 2 or 3 instruments/charts, multiple indicators on each chart set to Close=False, update interval set to 0, and I haven't had any notcible problems with lag in the year or so I've been using Ninja. My computer is very standard -- 4 gb ram, 2 core E8400 chip. I also use Zen-Fire/Mirus (via Comcast interent).
Just out of curiosity, are you measuring bar lag soley by time and sales? Not to point out the obvious, but are you certain it's the case that the bursts of activity on the T&S you're associating with lag are actually pushing through new levels? If not, then the range bars may not have a reason to update. You often see huge bursts of acitivity on the ES tape, only to then notice that a particular price level was never actually broken.
However, if a minute bar or the DOM is pushing through new levels and the range isn't doing anything, then that's obviously a problem. Have you compared range bars to minute bars or DOM side-by-side?
Just curious in case this is something I should keep a closer eye on. Thnx.
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