I have a hp laptop, au 111tx to be specific, with a 940mx 2 gigs ddr3. The thing is the GPU works only if the laptop is plugged in and charging. I am pretty sure it's the power saving technology of 900m series maxwell cards. How do I turn that off to play games on the go. I also read some articles saying that internal batteries don't provide sufficient power for gpus and it could affect the performance of GPU as well as the life of the battery. Soo thoughts on that too please