In-game text issues/disappearing enemy stats

[Vloek]

I've been playing the game for a while now, and on my computer (that computer crashed =( ) everything ran fine, and I had barely any problems aside from lag. So in light of my addiction to the game, I started using a different computer when my computer crashed. On this computer for some reason the following errors are present:
HP/MP bar text is blurry.
All text above the chat window is blurry.
Any text that appears on screen (NGD alerts, HP/MP alerts,) is blurry.
2D textures that are always on the screen, depending on what they are, also appear blurry. It seems that things that don't change in that sense are constantly messed up, but things that you can highlight don't get that way.
Enemy and Player name/hp bars (when you highlight the character) don't appear unless there is no earth behind them.
On top of all of that the lag is immense. It makes it very difficult to play.

I was just going to let this all go, but it's too hard to enjoy the game like that. Any advice, tips, or bug-fixes that can help me with my problem would be very much appreciated.