World Creator Heightmaps render quality

Hi!
I’ve got a landscape done with WorldCreator, then exported the heightmap, then UE convert it to proxies…
Everything looks nice on the viewport, but when rendering in cinematic quality over the render queue it looks like it’s set on the worst LOD option.
I’m trying to force the LODs but I don’t find the place to do it.

Also, I’ve a message saying… “video memory has been exhausted”

Is there any way to force it to make an image sequence no matter how long it takes?

Thanks in advance!