Disappeared meshes with MDF

Hi,
We use MDF and a complex scenario, but it not takes more than 2.5 Gb of GPU ram.
At some point, after moving around the map, some meshes start to disappear (whole buildings, or part of them).
Sometimes a floor is not rendered, and other times some part of building disappears when we approach and appears when we go back (similar when a LOD does not exist).

This problem is related to Linux package only, in Windows it works fine. And also only to Vulkan, because using -opengl in linux seems to work fine (but some other artifacts related to MDF appear, like blask shadows over meshes).

We use Ubuntu 16 and 18, and UE 4.24.3

This is an screenshot of part of a building disappeared

Any clue about what to check related to MDF?

Thanks.