YEah, but why wouldn't you want HTML CSS to render your ui.
I'm going to revisit electron / nw.js for games again this year. Last time I tried 4-5 years ago I could not get smooth animation with request animation frame.
But it depends what you do, smooth animations of some elements is possible with html. But in my case it got complex and html was the bottleneck. Now I have the same assets in Pixi and it runs around 100× faster. No more lags, no stuttering. No more html.
(Allmost, some static content is still HTML, but that is fine, as long as the DOM does not get modified)
I recommend pixijs.
But it depends what you do, smooth animations of some elements is possible with html. But in my case it got complex and html was the bottleneck. Now I have the same assets in Pixi and it runs around 100× faster. No more lags, no stuttering. No more html.
(Allmost, some static content is still HTML, but that is fine, as long as the DOM does not get modified)