Arced extrudes don't maintain curve

[JonKoch]

I've attached a screen shot of what I'm talking about but I'm just trying to create a semi circular deck and step. I took my 2D shapes and extruded them and then created symbols and rendered them with a texture. For some reason they get all jacked up and don't maintain their original curve or arc. 

 

Any thoughts on why this might be happening? or a better workflow for this? 

 

Thanks!

 

 

[Jeff Prince]

Fix your rendering setting for “shaded” by telling it to add more detail, you look to be set at Low right now.

[JonKoch]

1 minute ago, jeff prince said:

Fix your rendering setting for “shaded” by telling it to add more detail, you look to be set at Low right now.

Thanks, Jeff. I went to medium and nothing changed but then tried High and it seems to have worked. 

 

Thanks!