I have the same issue but I have windows IE and well numerous tabs and it gets to the point where some websites just have tons of advs loading and it slows everything down. I am connected to a dock to two monitors and on occasions when using IE or applications one of the screen goes black and then comes back like nothing has happened and other times both screen flicker off to on or it seems that way. And other times when there is heavy usage I believe from IE then the screen goes black and for at least 30 seconds and right there I know it automatically logs me out of my session and WIndows does not allow me to save anything. Right now MY fan is only or it may be from the GPU which I think there issue is. Other times I had the driver for the video card crash and well then there are pixels on my screen which are not well defined.
I am using a M4500 With Windows 8.0 and M1800 Nvidia GPU and with 16GB Ram.
Last year or earlier in the year this was not an issue but I believe the drivers and WIndows * is not really compatible. I also use SoldiWorks 2014.
This is irritating and especially the IE issues OMG terrible Browser!!!!!!!!!!!!!