Slight ring visible -> caused by server simplification #232
Description
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.
