Why do all of my lucid dreams, most recently last night’s, have a drunken or blurred aspect to them? I’m not saying I don’t remember them, but it’s more of my actual vision in the dream, as if I’m looking from underwater in a pool. My vision is quite blurred, but I can still make out surroundings. I shouted “increase lucidity x 100” but nothing really happened. Any advice or experience yourself?
It’s the vividness, and the reason “lucidity increse” didn’t work was probably because you didn’t expect it to work.
My advice would be to try a pair of glasses in your lucid dream, it can do wonders 
It may happen that some LD’ing problems occur during some time then they disappear. Then don’t worry a lot about this. By the way, the beginning of the dream may be blurry, and it’s better later, or vice-versa. You could have tried to enter another dream context, by passing through a door, etc.
And MovieMe is right, it’s not lucidity but vividness, so it would have been better to shout “increase clarity!” 
Or simply start eating some Vitamin B6 
IMHO, this kind of vividness has nothing to do with B6, just my two cents. 
Try shouting out more clarity now, thats what i do and it works nearly every time plus u have gotta fully expect it’s gonna work.