Windows 7?

[Imp]

That was my point 60 & 70 are whats offered & you said you have to reset each time so is it changing to 59 on its own despite the fact the setting is 60?
I am assuming you run in full screen at a diffrent resolution to your desktop so when it resets display resolution for some reason it is also changing the refresh rate. What is your desktop set to display at & what does it actually use 59 or 60? Guessing 59 which is why you need to reset each time.