Slicer not keeping circular models as circles
The model I've designed in my CADD software (Autodesk Inventor, most recent student version) is nice and circular. However when I export the model as a .stl and load it into the slicer, the model in the slicer isn't perfectly round. The model comes out as a many-sided polygon rather than a circle. Any ideas on what might be causing this/ fixes?
Using a CR-10 printer if it matters.
First screenshot below is from Inventor, second is from the slicer.