So I have two problems: 1. My first problem is that once I attempt to play games through steam, they usually work fine until, they lag up and become unplayable, once I receive a notification. Such as a notification of a friend coming online or that I received an item. other examples would be when running skype, and playing a steam game, if I receive a notification on skype it, pretty much as stated before makes the game unplayable and it begins to lag out, I usually have to proceed to turn off the game, which becomes even bigger of a problem.. 2. So after using steam for quite some time everything was fine, and before switching to linux I remembered I had Terraria installed, and wanting to play this game I installed "Playonlinux" because original Terraria is unplayable on steam alone. Therefore using playonlinux I installed terraria, and attempted to play it, but the end result was that single player worked, but when attempting to join my friends server I was unable to, therefore I gave up on all efforts of playonlinux. Playonlinux installed steam as well as terraria, and was running steam separately, this is where my second problem appears. My second problem is that after uninstalling playonlinux, and returning to using original Steam, steam completely did not work, what i mean by this is once I opened steam, it would long in and everything would work normally, however once I got into the menu interface I became completely unable to do anything, I would attempt to click anything, but nothing would work. I attempted uninstall and reinstall, but the problem still existed. I believe the solution is to appropriately uninstall it considering that i might be uninstalling steam incorrectly.