I dropped PHPStorm for VS Code as soon as I could. PHPStorm (and WebStorm) just felt slow by comparison with VS Code, and that was mid-2016. Sometimes upon opening a project, not for the first time, PHPStorm would just freeze while my MBPro fan spooled up like it was going to take off. I say, "not for the first time," because this same behavior on opening a medium-sized monorepo was absurdly drawn out. When I was using it every day (in 2015) at a workplace where everyone else also used it, opening PHPStorm was something I tried to do only once a day, when I got to work, so that I could use that time to go get breakfast while it struggled with indexing or whatever. That one behavior put me off of Jetbrains products and sent me searching for something better over and over, and it's something that VS Code never does. Of course, once in a while Code struggles with individual files if they're more than a few thousand lines, but it doesn't present as a speedbump I have to navigate every time I open the editor, at least.