Metahuman 4K textures shows as 2K UE 5.6

In Unreal Engine 5.6, I created a Metahuman with 4K textures, but in the Content Browser the textures appear as 2K.

What could be the problem?

So I discovered that
the normal maps are actually 8K, not even 4K.
However, the base color textures are only 2K, which seems to be the standard in Unreal.

It looks like we can simply upscale the base color for work if needed