The server simplifies the geometry using the mapping.yaml files using tolerance and zres
zres11 = on a tile with zoom 11 the pixel density should be equivalent to 256x256 pixels
the ring is probably visible because we simplify too much while using tiles with 1024x1024 resolution. -> increasing the tolerance:zres by one for each zoom level should lessen the effect. On the other side it causes larger tiles and worse performances.
The server simplifies the geometry using the mapping.yaml files using tolerance and zres
zres11 = on a tile with zoom 11 the pixel density should be equivalent to 256x256 pixels
the ring is probably visible because we simplify too much while using tiles with 1024x1024 resolution. -> increasing the tolerance:zres by one for each zoom level should lessen the effect. On the other side it causes larger tiles and worse performances.