I have the latest updates of El Capitan and Itunes on a 2015 rMBP. Recently I have noticed smooth scrolling issues inside itunes, some in chrome and some in firefox.... but mostly Itunes when using the touch pad only. I can see the cpu usage going well above 100 percent when scrolling through an itunes store or wishlist.... Has anyone else had issues such as this? I have seen scrolling issues, but none mentioned high cpu usage. Any ideas anyone ? Thanks in advance !!