Hey. Me and my friends have the same problem too.
This bug causes a lot of discomfort when we’re working with maps that use many texture unwraps, especially 4k or larger. When I move around the map, the textures don’t have time to load to maximum quality and then there’s a short freeze after which some of the textures just go black.
This problem occurs most often with 4k and higher resolutions, because it takes more time to load them.