I'm not sure how many times this has been brought up before, but I've only seen it brought up once. In an earlier update, Square Enix fixed HALF of the problem, but now it's back.

About 99% of places that are sloped (a few places in towns don't have this problem) cause our characters to glitch very jittery motions, up and down. I think the reason behind this is that when we go down the slope, instead of having a smoothly sloped path to walk on, our characters follow a 'stairs' pattern while walking, straight forward a bit and then drop down a bit, repeating, and of course, the faster running causes this to look like a spastic glitch. Going uphill does not yield this problem, at least not that I've noticed.

In the mentioned update, they only fixed the name that shows above our character, and it no longer jittered up and down, but the character still did. Now, everything jitters again, as if that update never happened.

Can this problem be fixed? I know it might not be a high priority at this time, but sometime I would like to see our characters run smoothly downhill.