My laptop (Asus GL551JW-DS71) has been running games at exactly 30fps on pretty much every game without the charger plugged in. Of course, when the charger is plugged in, it runs at 60fps (possibly more without VSync on). I've noticed this after I clean installed Windows 10. My PC is at 60Hz refresh rate, and yes, it is running the GTX 960m graphics processor, not the intel one. Any suggestions for this issue? Before upgrading to 10 I could run portal 60+ fps no problem without my charger being plugged in.