sterrific

I've tried many other servers before Forsaken and unfortunately, I face this issue only on this server. May I please know why I am facing this problem? How do I fix it? A few points to take note of: 1. It only starts to happen when I am on this map, Geffenia 4, though I'm not sure if it's relevant or not 2. The screen starts to blur in "S" style 3. Warps back to city, sometimes it disappears, sometimes I just restart the entire thing. 4. Windows 7, 16GB RAM, 1tb space, i7, AMD R7 200 series (just trying to provide as many info as possible)