They're using Webkit, yes, but I guess it's highly customized. The performance is so much worse than Chrome and FF
It's even possible to create pages in a way that reproducibly freezes and crashes Vivaldi. Their rendering process handles pages with many elements and multimedia objects very poorly.
It's even possible to create pages in a way that reproducibly freezes and crashes Vivaldi. Their rendering process handles pages with many elements and multimedia objects very poorly.