What is causing this Terrain Stretch Issue with imported height maps?

When importing my heightmap, my terrain stretches at all edges.
Created in World Machine.

I’m assuming its something to do with a difference in resolution?

Probably. Try to use the dimensions that are given here;

Hi i Think you changed the Terrain Szise. If you Imported it from an Hightmap or something you should doublecheck Your Szises, in the 3rd party software the Resolution Should be the Same like you Import.

hope it helps

Try’n use the recommended landscape size as shown in this picture below

OR

You can go to the landscape editor and go to Manage → Change Component Size → Set Number of components to some even number like 8 X 8 or 16 X 16