Having display issues

[vndrzl]

I am having an issue with the bags, dialog boxes, mini map and full map, and some of the terrain in the game. There are times when the bags, dialog boxes, mini map and full map appear to go black, and I am not able to see anything. Also, as I fly around the areas, I notice that some of the terrain is not fully rendering. There are parts of the terrain that do not match other parts. This all began happening after the patch came out. I recently had to delete and re-download the world.mpq file, due to the file ( I assume) being corrupt. I was able to log into my account, but after I chose a character and tried to log into the realm, it would freeze on me and I would get a error. Please let me know if there is anything I can do to fix the display errors.

(I have attached multiple screenshots of this happening)