Terrain Blocks don't load properly on SM5

Please select what you are reporting on:

Unreal Editor for Fortnite

What Type of Bug are you experiencing?

World Building

Summary

Sometimes when using multiple custom paints in one terrain block, the terrain block will show a grey blocky texture on the landscape block on SM5. This happens a lot more with Performance mode than with DirectX11. DirectX12 doesn’t have this issue. I think this issue is similar to this Unreal Engine bug: Landscape Grey Sectors While Painting

Steps to Reproduce

I don’t know exactly how to reproduce this issue, but this is how it happened to us. Make custom terrain paints and paint multiple of them on a terrain landscape (multiple paints on 1 terrain block). After that you switch to Performance mode or SM5 in Preview Platform.

Expected Result

The terrain is expected to load properly like on SM6.

Observed Result

A grey blocky texture over the whole terrain block is shown instead.

Platform(s)

All platforms using DirectX11 or Performance Mode.

Island Code

4718-2543-2030

Additional Notes

In the map linked to the island code you can see the issue in the frozen area only on performance mode.