I am developing on Windows 7 SP1 with a GTX 780 and with both the 0.4.2 and 0.4.3 sdks I am unable to set breakpoints in my app without freezing the computer when using the SDK. It makes debugging more difficult. Is this a known issue with VS 2013? This occurs in the tiny sample from the SDK if I set a breakpoint in the render loop.
I am experiencing this issue too with 0.4.3 (this never happened with 0.4.2). This happens even when only using ovr_Initialize(), and commenting it out causes the behaviour to disappear. I'm running Window 7 x64, VS2013 and SLI GTX 670.
I believe the problem was occurring with both the 344.65 and 344.48 drivers. I have not tested 344.75 released the 18th. I'm going to stick with 344.11 for the time being. I'm using Open GL 4.x on a GTX 780 in windows 7.
I'm now thinking it might be related to shadowplay being activated in the nvidia center software. I am guessing that when I cleared my drivers it also disabled shadow play causing me to believe the driver was the issue. is shadow play enabled on your machine?