[Closed] Viewport drawing optimizations?

Is there any good way with maxscript to draw simple lines or shapes to the viewport without absolutely destroying the framerate? Some way to batch process what needs to be drawn maybe?

For example, here’s a simple pixel grid being drawn in screen space, and even with nothing else being drawn the viewport becomes a stuttery mess:

(
global thePixGridFN = fn drawPixelGrid = (
    if ::gbl_pixelGrid.count > 0 do (
        
        gw.setTransform (matrix3 1)
        gw.setRndLimits #(#colorVerts, #illum, #wireframe) 
        gwRect = gw.wRect
        
        pSize = ::gbl_pixelSize
        for pixRow in ::gbl_pixelGrid do (
            for curPix in pixRow do (
                pixPos = Box2 curPix[1] curPix[2] (pSize+1) pSize --x,y,width,height
                gwRect pixPos curPix[3]
            )
        )
        
        gw.enlargeUpdateRect #whole
        gw.updateScreen()
    )
)

--basic grid settings
gridSize = [10,10]
gridScale = 50
gridStart = [100,100]

--Get positions
::gbl_pixelGrid = #() --each sub-array is; #(x,y,color)
::gbl_pixelSize = gridScale
for h=1 to gridSize[2] do (
    curRow = #()
    y = (gridStart[2] + ((h-1) * gridScale)) as integer
    for w=1 to gridSize[1] do (
        x = (gridStart[1] + ((w-1) * gridScale)) as integer
        theColor = random (color 0 0 0) (color 255 255 255)
        append curRow #(x,y,theColor)
    )
    append ::gbl_pixelGrid curRow
)

--run
unregisterRedrawViewsCallback thePixGridFN
registerRedrawViewsCallback thePixGridFN
completeRedraw()
)