I have iTunes installed on one system that I use for recording games, storing travel videos, and as a backup for our Apple devices. I would never install it on a production machine, or one I use for gaming.
I have tried Razer Cortex as a process manager. I had made a video about it, but never posted because of the YouTube policy changes and because my uploads simply were not posting for some reason. It is even easier to use than AlacrityPC was when it was current.