I have seen this question asked many times and I have never seen a straight forward answer or solution. Sometimes it was never even answered. It was one of the big features advertised and one of the reason I bought Atavism. There were even videos showing that you could run quite a distance. I have not pushed because Atavism was in development.
I would still like to know how to build a large world with Atavism. Was hoping we could start some discussion about that.