If you get an Antialiasing issue like this one highlighted in the red boxes:
You are probably using one of these Antialiasing filters:

In the 5SRW method we follow another way to get sharp images.
We always use Area as antialiasing filter + Unsharp Mask at 1 pixel (in photoshop), using an additional mask to control the effect.

For more info about how to efficiently use Unsharp mask, please check Lesson #3o.
Related learning
Shorter renders at large resolutions.