Did you ever try to disable permessage-deflate with ws? It will never be as lightweight as uws because ws is built on top of `net.Socket` but I think you hit this ws issue https://github.com/websockets/ws/issues/804 in the WebTorrent tracker.

I think ws will use 3/4 times more memory than uws with permessage-deflate disabled which is a lot, but far different from 47 times as advertised.