In addition to the previous posts it also depends on the type of marker that you use. The default google.maps.Marker has a lot of function but also a relatively complex structure which takes more processing power to render. In contrast to that there is a variety of lightweight markers which are - as the name might suggest - lighter and thus more of them can be shown simutaneously.
But as a general rule you should try avoiding overlapping markers. The more marker overlap, the less a user can distinguish between them which leads to a bad overall experience. Regards, Martin Matysiak homepage <https://martin-matysiak.de> | blog<http://blog.martin-matysiak.de> -- You received this message because you are subscribed to the Google Groups "Google Maps JavaScript API v3" group. To post to this group, send email to google-maps-js-api-v3@googlegroups.com. To unsubscribe from this group, send email to google-maps-js-api-v3+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/google-maps-js-api-v3?hl=en.
