I got this computer with 8gb ram, and upgrading ram made it a little better, but sometimes games will drop to a few frames per second, and it will persist outside of the game unless I toggle Cool Boost, sleep the computer, or restart it. The iGPU usage goes all the way up when it happens, and I know it's not overheating because it never goes above 70 degrees. Games will run completely fine up until they start lagging, so I don't know what's wrong. Sometimes the computer will completely shut down if I don't fix the lag fast enough. Someone please help, there are so many games I just can't play because of this, and I got this new recently, so I'm not getting a new computer any time soon. Just ask if there's any other info I need to provide.
[Edited the thread to add model number to the title]