I'm using windows 10, the textures did work before, I deleted the game and reinstalled it so I didn't try to delete the mod. A picture of the textures is at the top of the comment. I have redownload the game, I haven't tried it yet though.
Is there a Error folder in the game folder? if so can you send it to me to check if there were any errors.
If it worked before redownloading should fix the issue.
windows 32b or 64b?
integrated or dedicated graphics?
The issue aren't the textures but the world precision.
Textures display correctly, the models have incorrect dimensions, this happens when you move far away from the center of the universe but the game should compensate and reset the position of the player to avoid this type of issues, not sure why this is not happening in your case.