First time I heard or used Vivaldi; the whole 2-panels in 1 browser chrome side by side looked interesting, but using it, docking/undocking tabs and resizeing the area's just feels very slow, especially when you're used to how snappy Google Chrome feels. Too bad because I want to like this :)
This is a sad problem that has come with developers using Javascript for everything. Development might be faster, but the end product is simply slow even on high-end machines.
Same thing happens with Visual Studio Code, Brackets and Atom when compared to Sublime Text, for instance.
