Graphic issues (FFXI & WoW) cannot isolate causeFollow

I cannot remember when it started happening but sometime Quarter Four of last year I started seeing “seams” in games I play that were never previously there.

The “seams” vary from game to game (In World of Warcraft there was a seam running down the middle of all characters if I turned them to the side, and also where branches attached to tree trunks)

In Final Fantasy XI the seams are everywhere, running from where grass textures meet, to cave, walls, everything (moderately spaced out but still common), also in Final Fantasy XI there are places where shadows are not blending with light properly leaving a line of shadow with shadow on one side and light on the other, this was not previously experienced this is also experienced in World of Warcraft.

In Final Fantasy XI (It’s the main game I play so I’ll be using it for most examples) textures on equipment will flicker, not the whole piece of equipment just parts of it, this extends to hair, armor, boots, and, pretty much all pieces of gear, the weird thing is that this flickering only happens depending on which zone (area) I am in in the game.

The flickering also happens to magma, while exploring a volcano I saw a stream of magma what was constantly flicking, non stop, rapidly.

I thought it was my 7300LE graphics card, so I replaced it with a 8600GT, problem still there, tried a different monitor, no fix, tried a different VGA cord but that did not help, cleaned out my PC still no fix, changed drivers, no fix, checked for malware, spyware, and virus, none of the above, and also defragged, I am at a complete loss as to what could be causing this, if anyone can help it would be greatly appreciated.

http://i232.photobucket.com/albums/ee11/Venion/12.jpg
http://i232.photobucket.com/albums/ee11/Venion/11.jpg
http://i232.photobucket.com/albums/ee11/Venion/4.jpg
http://i232.photobucket.com/albums/ee11/Venion/3.jpg
http://i232.photobucket.com/albums/ee11/Venion/2.jpg
http://i232.photobucket.com/albums/ee11/Venion/1.jpg

These are some old pictures, but the seams can be seen all over the place and I never used to see this crap as common when I first started playing the game four years ago on a different PC and when I started using this one a bit over 2 years ago, they just were not all over the place.

Graphics Card Setting:

Anisotropic Filtering: Application Controlled

Antialiasing Gamma Correction: On

Antialiasing Mode: Application Controlled

Antialiasing Setting: Application Controlled Greyed out.

Antialiasing Transparency: Off

Conformat Texture Clamp: Use Hardware

Extension Limit: Off

Force Mipmaps: None

Multi-Display/Mixed GPU Acceleration: Single Display Performance Mode

Stereo - Display Mode: Use Verticle Interlace Monitor

Texture Filtering - Anisotropic sample opti...: Off

Texture Filtering - Negative LOD bias: Allow

Texture Filtering - Quality: Quality

Texture Filtering - Trilinear Optimization: On

Triple Buffering: Off

Verticle Sync: Force On

Also having an issue where sometimes water graphics do not show up in still water... mostly happens in San d'Oria or Windurst, sometimes it'll be there, sometimes it will not, it's random so it seems...

If the seams are normal (although they appear to be a lot more common than I remember, and stand out a lot more) then what's up with the flickering & missing water (sometimes)