As PyCharm gets ever closer to the final release, we’ve decided to release a new EAP build in order to test the impact of our latest round of performance improvements. If you’re experiencing high CPU usage problems with beta 2, please give the new build a try and let us know if it helps or not.
And by the way, the Linux and Mac builds now enable the CPU snapshot capturing functionality by default. If you encounter a performance problem, you can record a trace of the CPU activity by pressing the “Capture CPU Snapshot” button on the toolbar, performing the CPU consuming activity and pressing the button again. After that, a snapshot file gets created, which you can then attach to an issue in the PyCharm issue tracker.