Hi friends. Today, I called Comcast asking them to upgrade my internet speed to 150mbps. Which they did for another 50.00 a month. To be honest, I thought it was my internet that was causing the lag. My iMac is still lagging and I'm unsure why. Applications that are installed: Logos 6 Chrome Dropbox YNAB Microsoft office Evernote AVG cleaner Any suggestions? Just a side note: My daughter plays Minecraft using the internet as well as Animal Jam. I read on another post to make another user name. Seems to work great. I wonder what is causing the lag on the other user name.