Hi. You may need to add some info so someone can try to replicate. I just gave it a try and obviously it depends on zoom level, but I get anything from 12 segments at zoom extents of an angled line ( with a 1mm rise at 70mm ), to 2 segments if I zoom out to 40% which is about what I would expect.
My screen is 1920 X 1280, using TC full screen. I use RedSDK mode with hardware aliasing turned off,
The questions would be. Graphics card, what screen size. TC 2016 pro / deluxe / designer. Native draw mode (GDI or RedSDK). if RedSK, a screenshot of the Native draw dialog box (from the options menu, which will show your setup). Maybe someone with the same set-up as yourself can see how things look on their computer.
### Edit ### Oops. I missed reading this bit. "These lines are then printed as described (i.e. stepped) and not as the required gradient." so the above test I did was probably wrong. ### End Edit ###