Where does the performance boost come from? about vector-river-map HOT 1 CLOSED

The first thing you should try in your app is using the latest version
v0.8-dev version of Leaflet from GitHub. There's significant improvements
in line rendering speed, for details see
https://groups.google.com/forum/#!msg/leaflet-js/_WJquNpdmH0/qQsasZpCTPUJ

The rivers-d3leaflet rendering of the river lines is entirely different
from rivers-leaflet. The D3 version uses D3 to create the SVG layer,
whereas the slower Leaflet version uses Leaflet's own drawing. I haven't
looked at the code for what happens when panning but ideally a pan would
not require any redrawing or anything, just a transform that results in
hardware accelerated graphics. Maybe something about the Leaflet SVG
structure doesn't do that? You may also want to double check in Chrome;
last I looked Firefox's SVG performance was not very good.

from vector-river-map.