I've updated ide to 9.0 and got big performance degradation with js-files. After small editing of file a syntax analysis is running about 12 seconds. In 8.0 it was running less then 2 sec. The same project (huge project with many php- and js-files), the same config.
What exactly happens on "syntax analysis" stage? Which settings can I disable to increase performance? I already tried to reset IDE settings, reset project settings, disable all inspections, but it doesn't influence "syntax analysis" stage. The problem is present in default build and with bundled JDK.