There's a new Elm performance mode.
If you’re still interested in trying it out, here’s how to ge it working.
- clone the 
elm-uirepo locally and point yoursource-directoriesto it.- You can make sure to checkout the commit for the latest release (1.1.1) in order to avoid pulling unpublished changes
 
 - Enable the virtual css in elm land via
 
import Internal.Model as Internal