This might be a bug ? Importing a 4096x4096 .r16 file is fine but when a 8192x8192 .r16 heightmap map is imported nothing happens, the engine creates a label for the landscape but there is nothing there. Can someone confirm please ?
I was able to reproduce this on my end and have entered a bug report, UE-24996, to be assessed by the development staff. Having said that, 8192x8192 is an extremely large heightmap and will most likely have difficulty importing. It may be beneficial to switch to a tiled world build when dealing with landscapes of this scale.
I thought so too but It’s nice to have some confirmation, I’ll look into tiled world builds then, thank you !
This bug has been fixed for 4.11. Thanks for the report!