The funny thing is that when I click on the tray icon the cpu use goes from %12(on 8 hyperthread-4 actual cores) to %0. I am not sure what is going on but my setup is super simple.
I am under Win764
Here is a screenshot of what I have. I do not use the dock panel mode only the systray
I have not enabled the "show newer files" option, I suspect that that option is somehow not working properly, maybe it is constantly watching folders?