Here’s a question for you…
Is it possible to export a terrain into multiple heightmaps… a grid or jigsaw puzzle of your terrain. So you could stich them all back together in a game engine for easier rendering?
‘Tiled Build’ should do this nicely. just uncheck ‘merge tiles’ in the options menu.
Also, try opening the heightmap in photoshop and croping the picture into your allocated grids (bearing in mind that you will of course have to have photoshop, and your heightmap will need to be something photoshop can open).
or, if you dont have that many perlin generators, you could convert your whole node list into a macro, and add all the perlin world location data node modifiers to the macro, and build your heightmaps one my one, manually adjusting the world location every time.
what game engine are you using? how does breaking up the heightmaps make it any faster? cryengine doesnt care either way, but hey.
Is the tiled output not available in World Machine 2 Standard Edition?