Hi - sorry about the trouble. I have to ask, have you tried rebooting?
If it's taking a while to load small textures, the two likely culprits are:
1) The harddrive - maybe it's on the fritz? You'd probably also experience other problems if this was the case, though.
2) The video card - is it possible you've got two video cards, an integrated one on the motherboard, and one "proper" good one? If the OS all of a sudden decided to run the game using the integrated card, that could cause a drop in performance, though I still wouldn't expect loading to be *that* affected.
How long are we taking here to fully load the game, btw? And how does it perform once the loading is finished? Also, are you running with any mods?
Another question is whether it's possible you've got something else that's running in the background and interfering with the game. Would be more of an issue if it wasn't an SSD, probably, but...
Another thing to look at are the video card drivers; if you've updated them recently, it's possible that a driver update broke something. Wouldn't be the first time!
Basically, as far as the texture loading code, it hasn't changed in quite a long time. So, more likely than not, *something* changed on your end that's causing this... the question is, what?