Thanks for reporting the issue. I'll try to fix the texture size. I think some of these can be safely optimized as 512x512 textures since i don't really use the full resolution anyway.

These look really nice, but 2048x2048 textures is huge for such small buildings. 1024x1024, 1024x512 or 512x512 is the recommended sizes for growables. LOD textures are also large and are recommended to be 128x128 or smaller for something this size. A lot of times it's better to add some more tris (to split and overlap faces) than to go up in texture size (and remember 2048x2048 is 4 times the size of 1024x1024). :)

Anyways looking forward to seeing more from you :D