I used the Periphery pattern as a pattern.
However, a tool path is created as shown below.
I do not want to create that extruded tool path.
Is there a way to prevent the stepover value from being generated without changing it?
Verify the Stepover value. You might want to decrease that a bit.
NX generates these moves when the stepover is that large that it would generate little islands in the corners.
As far as i know it cannot be suppressed, and as far as i could imagine, you don't want the islands also.
2 options for this:
1: Decrease the stepover (like Gerrit said)
2: Use Cutting > Corners > Smoothing > All Passes
Best would be to use both options.
If you only use the corners option than at least the tool will not dive into the corner, but makes a circulair sweep through.