@Vertex21 I never got a real answer on whether that was the reason. Also, they were using Mithril 0.2, not 1.x. We also don't know whether they made any effort to figure out why their code was less performant (if that was the issue) with Mithril, there could have been some possible improvements. Finally, it also depends on the kind of application you are building; a game with lots of graphics and animation would be more performance-sensitive. If you're building a data/table/form/etc. type of application, less so. I wouldn't worry unless you were building an app where fps was an issue, and even then, I would get some real evidence on Mithril vs Snabbdom performance.