I tried it for a bit, it seems a bit sluggish when loading pages for the first time, but it does get better over time. Probably something to do with caching, the browser is in early stages so quirks are probably going to get polished up over time.
Some people have already shared concerns that this is a paid Chinese product, but in my book that's fine. All the majors Chinese vendors have axed XP, it's from a solo developer, and there's probably still a huge amount of XP users and businesses in China that would gladly pay a small fee to continue using their existing solutions.
It's quite a miracle that it even exists, honestly