I had some issues while using the brush tool (it was distorting the end product too much) so I reset the preferences to restore everything back to default. Since then the brush issue has been resolved but now when using the Knockout Group option it leaves the elements being 'knocked out' pixelated.
I have attached an image of the element before and also after the 'knockout' both upclose and also at a distance where it is most noticable. Does anyone have any idea what I can do to fix it. I use knockout group a lot in my work so this is really going to hold me back.