The picture with the artifacts was produced by Blender. The one w/o artifacts can be produced by any number of apps.
kinda looks like you are still in face mode, but i didn’t think things rendered that way.
well i wasn’t alot of help now was i?
Looks like one, or a combination of perhaps several things in the render settings:
‘Edge’ is selected
OSA is not selected
if rendering as JPG ‘Quality’ setting matters, so increase
Hope this helps,