Dear friends,
I have a very irritating problem that I haven't been able to search for any related solution.
Like mentioned in the title and as in the picture attached here, whenever I get near to someone or a rat, all their texture details broke and turn dark. Please notice the men's faces. The closer I get to them, the worse their texture would be.

Is there anyone having the same problem? Or it's just me?

Sorry! Can't insert the picture here. Don't know why. Please leave your email if you're willing to help me out. Thanks a million.

The game runs very smoothly on my computer and I have updated the graphics driver on my PC. FYI.

Is there a solution for this one? Please help.