Vega-Lite author here. Performance is hugely important for us and is covered y the first three points on our roadmap: https://docs.google.com/document/d/1fscSxS

Vega-Lite author here. Performance is hugely important for us and is covered y the first three points on our roadmap: https://docs.google.com/document/d/1fscSxSJtfkd1m027r1ONCc7O8RdZp1oGABwca2pgV_E/edit?ts=5bcc2d98# https://docs.google.com/document/d/1fscSxSJtfkd1m027r1ONCc7O.... Some improvements will ship with Vega-Lite 3. Others are being worked on as we speak.