Cities are well known for it.

While I can't explain all the technicalities involved there, I can suggest a few tips on how to cope with it.

In addition to reducing the resolution, you could also try 1 or more of the 3 options available in the Shading panel of the Display Settings dialog.

If you work on one sector at a time you can put all the other sectors on different layers and then hide them, though they might be on the same sheet.

No worries. Blogs tend to get forgotten these days. I forgot all about these two myself.

I think the written tutorials Quenten was referring to are these two blogs?

EDIT: I can't believe they're 6 years old now.

Ah, a good choice. I used that one to do the Ferraris Style a few years ago. I've moved onto other apps these days, but I still use Krita from time to time to touch up seamless tiles that didn't quite go the way I wanted them to in other apps.

Looking good so far.

What software are you using?