Dragging from content browser to viewport

Hey folks,

I’m somewhat new to UE4 (currently learning C++ with UE4), but have been messing around with it for a few weeks now and have noticed, when I drag a static mesh (like a chair or table) to the viewport, UE will hang up about 20 seconds before it puts the mesh into the viewport without textures. Then the textures will appear after a further 5-10 seconds.

Now, once the mesh and textures have loaded into the viewport, I can place as many of the same mesh as I want without any delay, but if I was to choose another mesh for the first time, it will hang up another 20 seconds before it appears.

Is there anything I’ve done wrong or something I could do to speed the process up?

Many thanks!