[OpenLayers-Users] zoom slow when overlay vector layer

[Frost89]

Hi there

With 1.000+ markers, you'll also get 1.000 DOM elements which will slow your
browser down no matter what. I would never recommend that.
But an alternative could be to only show the markers at a specific
scale/zoomlevel and then maybe an overviewmap which won't be as dynamic as
the other (WMS maybe).

Hope this helps :)
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