Comment by jemmyw
WebKitGTK has some really bad performance issues. I've written an app using Tauri and it works very well on Mac and Windows, and it does nothing particularly intensive. On Linux the performance is awful. The Tauri devs acknowledge this and seem to have plans to move off it, but moving to another solution (basically packaging chrome like electron does) is obviously a lot of work.
WebkitGTK on Linux is arguably woefully unoptimized. I think people make the mistake of thinking "it's WebKit so it's fast" when it's not that simple.
e.g, it took Igalia getting involved to move more things to the GPU when other platforms more or less had that by default already.
https://blogs.igalia.com/carlosgc/2024/02/19/webkit-switchin...