Arnold - Visible pixelation/aliasing

TheDannyGrant

Hi all. First time poster here and noob of the freshest variety. I have trawled and can't see any other examples of this issue, but indeed I am so green I may be missing the mark. I have what appears to be visible pixelation in various areas of my render (using Arnold within C4D). It seems to be unrelated to any render settings as far as I can see, but the issue does seem to be present only when I use an emission shader on some text, however not with other objects. Pictorial examples attached.

Thanks all.

Danny.