Make sure to run PHPStorm with 64-bit Java on Windows if you are on 64-bit platform. Much better experience. PHPStorm on Windows ships with 32-bit Java. You ha

Make sure to run PHPStorm with 64-bit Java on Windows if you are on 64-bit platform. Much better experience. PHPStorm on Windows ships with 32-bit Java. You have to install 64-bit Java yourself and change your Windows shortcut to point to the 64-bit PHPStorm exe. It also has it own vmoptions file. If you install Jetbrains Toolbox App you can tell that run 64-bit for you and also set java heap size.