Camera issues
It’s not just a Norn phenomenon. It’s a general camera issue. I love this game — but, like you, the camera is preventing me from playing the game for too long. I am not prone to motion sickness in video games or in the real world. Guild Wars 2, however, has made me dizzy several times. As seen in this video, when your character hits an object (even tiny doodads like a fence or a rock), the camera will zoom in and out really fast. Some people don’t notice it until you point it out.
You can replicate this by having any character stand on a boulder (or any object with collision regardless of size) and then having that character walk off the boulder. The camera will push towards the character and then pull back within a split second as your character walks off the object. Sometimes when you have a more complicated object like a staircase, the camera will zoom in and out repeatedly, trying to seek a stable distance between it and your character.
ArenaNet acknowledges the issue in response to a larger post. Hopefully we will see a full fix soon.