Still not sure what you mean by lines. Some observations:
- safety/retract height is set to 0.157 in. which should be fine ,so long as the stock surface zero is set more than half an inch below top travel limit
- you have one toolpath set to cut out 4 profiles — I’d suggest using 4 separate toolpaths — you’ll get more efficient movement, also consider adding geometry around to cut as a pocket down to tab depth, see: Adding geometry to cut as a pocket with a finishing pass
- your stock thickness is set to 0.5 in., but you have the profile path cutting to 0.75 in. deep — okay?
If that doesn’t address your concern, please let us know the specifics of the lines and we’ll do our best to help.