Enormous CPU / Time/ Memory consumption on some data

[Nikita-Pavlenko]

This, relatively small and simple data

1. Consumes 1.5 Gigabytes (GB) memory on trying to create DefaultPlotPanel
2. Takes nearly 2 minutes on relatively fast PC

 val rand = java.util.Random()
    val n = 90000
    val data = mapOf<String, Any>(
        "x" to List(n) { "Some average text $it" },
        "y" to List(n) { rand.nextGaussian() }
    )

    val plot = letsPlot() + themeClassic() + geomLine(data = data, showLegend = false, sampling = samplingNone) {
        x = "x"
        y = "y"
    }

Main.zip

[alshan]

The reason for disappointing performance found to be a huge number of ticks and gridlines along the x-axis.
After the fixes you will see significant performance improvement it terms of both, building time and memory consumption.