Yes
just one line each.
I'm using so far 5 single line charts and three single line for trends.
The the variables which are 7 are updated every 40 sec and the same update is for the charts.
Charts are using 12 hours time scale with single line and so far 3 single line charts for trends with 12 day scale time coming from sqlite db.
What hardware are you running node red on?
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I'm running Node-red locally on a laptop with Win 10 with i-5 Intel processor and 64 bit OS.
The same as the browser which is Chrome so far.
The data come from Particle Photon.
