Is anyone using the Arduino IDE in XP? Or willing to download about 100MB for a quick test?
Just get the portable 1.8.9 version. Make a folder named "portable" in the same place as the .exe to avoid getting junk in your "Documents and Settings". Run arduino.exe and see if the CPU usage drops after it loads fully.
It comes with its own Java and can't use the system JRE without recompiling.
My issue is that whenever i start arduino.exe, which in turn starts the bundled javaw.exe, all my CPU gets hogged by the system services.exe process. This happens even when just sitting