Default Manny Foot Jittering?

Nope, It seems to just suddenly have the glitchy foot movement in a diagonal strip of nothing along map… I turned on the show collision and nothing shows up there. T.T

It works completely perfectly on most the map, but I just found that it seems that there is a diagnal strip that passed the middle where it is always doing this. I can walk in a diagonal path along this and be stuck doing this, so it may not be spots, but more of a diagonal direction all the way…