Thank you . This is indeed very helpful.
Thinking about it, some of the models may have had a very high poly count as I didn’t clean them up after I had finished detailing them. But there were one or two that would load into Blender broken. An example would be a floor tile that I had created. Only the top half had been correctly imported, the bottom half (which is visible at certain points) seems to only load properly it’s the farthest part from me (if that makes sense*).
For textures, I use SketchBook pro (Windows version) to draw and detail the textures, and then I’ll use Photoshop to clean up the textures.
*I shall add a screenshot of the tile later when I am back at my computer again if it would help more.
Thank you for the reply.