Late 2013 Macbook Pro: The other day, Safari started this issue where if I type text such as I am doing here, each key typed shows a 2-3 second delay onscreen which slows worse the more keys I type. Sometimes I see the spinning beach ball thing. Also there are other delays, like closing Safari takes longer, sometimes websites don't come up as fast. Other browsers work just fine but I prefer Safari for it's better battery life/OS integration. I tried turning off all extensions. I tried freeing up RAM using an app. I tried using a cleaning app to clean out all the junk files. I tried rebooting several times and I updated every software update. I have antivirus so there is no viruses. What would be causing this? I also have another question. I have 8 gigs of RAM and this app that can monitor and clean RAM. It often shows up to 100% of ram being used when all I have open is Mail app and 1 tab open in browser...why is this using up so much ram? Does OSX not have a memory manager? So I use this app to free up ram but I don't notice any difference....is this app necessary and will OSX manage it fine on it's own? Or is there something else wrong? I don't have anything in startup other than speech synth so it can read me messages outloud. I don't know what else to try.