Feel like I'm necroing my own post a little but Ive been gone. Hope this still helps

Platform: PC
ISP: Gyao (Japan)
Type of Internet Connection: Ethernet
Internet Connection Speed: 1 GB
Date & Time: Anytime, anyday
Frequency: Whenever I'm running down a slope or on unever terrain.
Character Name: Draven Pierce
Race: Human
World: Besaid
Class/Skill Rank: Doesnt matter. Happens on every class
Physical Level: Since 1 and still going
Area and Coordinates: Any area with a downslope
Party or Solo: n/a
NPC Name: n/a
Monster Name: n/a
In-Game Time: Anytime

The character and name shake up and down in close-medium camera range while at far camera range, the camera perspective shakes instead.