My Mac has been having a lot of issues lately. Most of them have to do with lagginess and the spinning beach ball appearing quite often, and staying there for a long time. If my Mac is so slow, there must be some processing going on in the background that's using up all of the resources. Is there a way to "kill" all that processing going on in the background? If so, how do I map the command to a key combination? (Because when my Mac is hanging up, I can't open up the Activity Monitor. Yes, the lag is that bad! Even when I manage to open it up, it says I don't have permission to use it.)
Force killing background processes isn't wise nor advisable. Some processes are very important to the OS's function, like
CoreServicesUIAgent, etc. It's hard to distinguish between essential and non-essential processes if you try to "insta-kill" lag via a key combination.
I fixed the issue by moving the mouse around a lot while I watch YouTube videos in Safari. I don't know why, but it doesn't freeze when I do that.
I also got a new computer, so that solves the problem too.