MarkerCluster not optimized?

[chefranov]

I have ~15000 markers and when I try show it with MarkerCluster my browser freeze and page doesn't response.

Use like this:

    <!-- Marker Cluster -->
    <MarkerCluster>
        <AdvancedMarker v-for="poi in visiblePois" :key="poi.id" :options="{
            position: { lat: parseFloat(poi.latitude), lng: parseFloat(poi.longitude) },
            content: createMarkerContent(poi.category_icon),
        }" @click="handleMarkerClick(poi)" />
    </MarkerCluster>

Am I doing something wrong or is this not optimized?

[tony-nz]

Also running into this issue, and as for a test, without using Clusters, replacing AdvancedMarkers to Markers (albeit depreciated) seems to be a notable difference in performance.

[tony-nz]

Okay so I believe the performance difference between the deprecated Marker and AdvancedMarkerView (Custom Markers) boils down to rendering methods:

Deprecated Marker: Renders via canvas/static images and is highly optimized for large quantities (1000+ markers), with minimal DOM overhead.
AdvancedMarkerView: Uses individual DOM elements for each marker, which does offer more customization but can cause performance issues with large numbers due to DOM manipulation, reflow, and repaint costs.

Unfortunately, I will have to use the deprecated Marker in my case.