I have tried it out and by default it was so slow as to be unusable. After discovering it required some customization in /etc (because it's the only GUI application that fails to recognize my GPU on a very popular distro with next to zero customization, because I game a lot on Linux - weird how that's a
me problem and not a Zed problem) it got better, but still noticeably slower than VS Code.
The modern Sublime Text is Sublime Text. There is way too much "extra" in Zed to compare it. If anything, it's a new IntelliJ.