It sounds like you may need to change one of the display settings in Simplify3D. To confirm which setting to use, I will need a bit more information. I will explain the steps to follow below.
Please download the file below and then copy this file into the Simplify3D installation directory (typically located at C:\Program Files\Simplify3D-4.1.2).
https://www.dropbox.com/s/7b1gro9khc4s7 ... g.exe?dl=0
After you have done that, please open the Windows Command Prompt (you can do this by pressing Windows+R on your keyboard, then typing cmd.exe). Type the following commands:
cd "C:\Program Files\Simplify3D-4.1.2"
qtdiag.exe > C:\Users\%USERNAME%\Downloads\debugInfo.txt
That will export a file called "debugInfo.txt" into your Downloads folder. Please send us that file at
[email protected] so we can recommend some further steps for you.