UE 5.3 crashing when trying to import a 16K heightmap

Umm, sorry if I missed something here, but I’m trying to import a heightmap into Unreal Engine, not render out a sequence. I can see that the error is the same, however enabling the ‘High Resolution’ setting in the Movie Render Queue has no bearing on importing a heightmap.

Okay so if the problem is the fact that a 16K texture exceeds my GPU’s maximum texture size, I would still like some guidance on how to import the tiled 8K heightmaps without these seams appearing.