Polymer is crap. Web Components are great. There is definitely no performance issues. Ditch polymer and other such bloated libs. Try this 200-line lib instead:

Polymer is crap. Web Components are great. There is definitely no performance issues. Ditch polymer and other such bloated libs. Try this 200-line lib instead: https://github.com/wisercoder/uibuilder https://github.com/wisercoder/uibuilder