[Google Earth] Movement trail artefacts when import model from SketchUp

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Thanks guys for the tips. I’m new here and all tips are appreciated. Here is a a screen capture of the model imported to GE and the artefacts. I outlined the artefacts in red:

1438×837 216 KB

Here’s my info:
Graphic Card: NVIDIA GeForce GTX 970M
Operating System: Windows 10 Home
SketchUp Make/Pro version: SketchUp Make 2016 32-bit

I followed the work process here, with modifications as this was for a prior version: http://masters.donntu.org/2007/fvti/grischenko/library/lib_8.htm

Thanks for the help!