Hello,
There are a number of ways to speed up D3 visualizations, but it all depends on what is making it slow in the first place. What kind of performance limitations are you trying to overcome?
In general, usually the cause of slowness with D3 programs is a high number of shapes. When there are more than around 10,000 SVG shapes, animations become jagged. Here's a
Tree Fractal Example that shows how performance decreases as the number of shapes increases. This is a limitation of SVG rendering, not D3 itself.
One common solution to increase performance on data visualizations with too many shapes is to apply a data reduction step, like binned aggregation or random sampling, to reduce the number of shapes drawn while retaining the interesting patterns of the visualization. Another common approach is to migrate to a rendering technology faster than SVG, like Canvas or WebGL.
Best regards,
Curran