Dell Latitude Integrated Graphics Slow
I'm new here so this is probably the wrong place to put this but anyway...
I've got a Dell Latitude E4300 and its running YosemiteZone 10.10.1 (using chameleon). Everything is working internet, sound etc. except the Intel GMA 950HD graphics is really slow. After the computer has been on a while, it speeds up a bit, but there are still loads of glitches. Could someone talk me through a way to improve the performance in detail, as I'm a beginner. Thanks in advanced.