You indeed seem to be kind of new in this Forum. Otherwise you would know that this very Doug Kightley is one of the most experienced members here. And as far as mine goes there is nothing wrong with his mannerism at all....
Hey....don't make me blush!!
I ....was under the impression this is a support forum so I don't know where you learned how to talk to people but you really need to work on your mannerism!
So you're aware, this forum is provided by Simplify3D....which for most of the time is where their involvement ends. Virtually all of the users on here are S3D users with no connections whatsoever with Simplify3D.....and many answer requests for help and questions as a friendly gesture to other users of the software, to help the user community as a whole. My comments on my reply above were not intended to insult or demean anybody. It was just the way I says things!
Back to your question....
You are getting the wiggly lines as part of a solid infill area the slicer has identified behind the steeply sloping surface of the part. This infill cannot be got rid of....but you can make it better by changing the External Infill Pattern on the Infill tab to Concentric. This will change the appearance of any top surface....but it will probably make it look less abrupt.