Looking at your XML setup for your Tune To sign, it says Horizontal Matrix, 162 pixels, 18 strands.
First, it should be a Vertical Matrix (based on your video), because your matrix is 9x18 and, starting from the Bottom Left, that means you go UP from the bottom left corner, then over and down, then over and up ... making 18 vertical strings.
If you started at bottom left but went across the bottom, then it would be over, then up. Still 162 pixels but 9 strands.
So, which way did you actually wire it?
<model name="Tune To Matrix" offsetXpct="0.1563" offsetYpct="0.3010" PreviewScale="0.1100" PreviewRotation="0" DisplayAs="Horiz Matrix" StringType="RGB Nodes" parm1="1" parm2="162" parm3="18" StartChannel="1" StartSide="B" Dir="L" Antialias="0" ModelBrightness="-44" MyDisplay="1"/>