what printer are you using ?

To me it looks like the posts are being printed too fast and too hot and without adequate cooling between layers.
(looks at cura settings)
20mm/s print speed and 215 filament temp.

ignore the above, you're actually printing too hot and too slow. lol

drop your printing temp to 200 and up the print speed to 50mm/s and see what happens. You might get a little stringing - but you should get much better cylinders.
And yes it would slice much better with simplify3d.

And what sort of print cooling do you have ?