Playing on the new dx11 client, the default 'maxium' setting results in this huge graphical bug on the floors in the Haukke Manor group instance:





This happens at a certain camera angle, but is large and noticeable enough. In the 'Maximum' setting, even slowly going through and lowering all options to lowest settings and/or turning off all options available, the glitch persists.

However, changing to any other default setting will remove this bug. Perhaps some hidden setting in the Maximum default setup causes it.