Suztera :
It's a feature designed by Nvidia: GPU Boost 2.0, it will automatically overclock higher clocks and memory speed than you set if the temps are low enough and there is enough power. You cannot turn it off via software. If you really want it off, you have to access the VBIOS and change it yourself which I would not recommend you should do.
That's what I had thought, the problem is its boosting to the point where it keeps crashing. I've fixed it now by lowering the clock to a point where its stable, and its staying consistently at 1514 mhz and its stable, even though that's about 15 mhz higher than instructed but it won't let me do any fine adjustments between 1514 and 1534, its either one or the other... which is weird. Would gpu boost be a part of that issue as well? Thanks again for your help.