Panning performance suffers when using clusterer

Question

When using a cluster layer, I find that map panning performance gets progressively worse the closer I zoom in. If I zoom in very close, I can hardly pan at all - the map simply does not respond to my click+drag motion. I am restricting to 20,000 the number of points fed to the clusterer (because of this limitation), but would like to allow millions. Is there any way to improve this behavior? Or is it inherent to the way the clusterer is implemented?

NathanielWingfield · Answer

Cluster or not, for performance reason,  you can't render 1000000 points at client side.
Please look at this thread http://forums.arcgis.com/threads/28815-How-to-display-1-million-points-in-the-Map that might help.

But is there any solution to clustering my 20,000 points? I am experiencing severe performance problems with panning even at this number, as described above. Is there a limit to the number of points the clusterer can render without breaking the user experience?

DominiqueBroux · Answer

Cluster or not, for performance reason,  you can't render 1000000 points at client side.
Please look at this thread http://forums.arcgis.com/threads/28815-How-to-display-1-million-points-in-the-Map that might help.