[OpenLayers-Dev] Performance problem while switching between layers using "setVisibility" (show/hide layers one by one)

[Phil Scadden]

This belongs in the openlayers-user group.

Vector layers with large nos of vertices do not well as you have found 
because the drawing has to be done is JS. You will get far better 
performance if you use WMS for display and WFS for query. (eg 
http://openlayers.org/dev/examples/getfeature-wfs.html). For more 
advanced queries, create the protocol as per example from WMS, and use 
it for queries. This was discussed recently (and often) in the user 
mailing list. You may even have a case for using WMS-T.

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