The trouble is that I cannot scale the landscape. I have tired it previously and it leads to unwanted bugs.
In this picture you can see my Creek (0.25 scaled down River) - it became discontinous on 200 scale landscape - with 100 scale landscape it was fine. Also scaling the landscape introduces issues with the landscape material and you have to re-work all the tilings inside. I feel like I have explained this issue somewhere else, I just don’t remember where. 