GPGPU benchmarks cause video driver to crash!

On Windows 8, 7, Vista, the video driver is killed and re-started if it does not respond for 2 seconds.

Unfortunately, some GPGPU tasks (kernels) may execute for longer depending on the video card / system - despite Sandra's calibration to ensure they do not take longer.

Sandra increases this time-out to 15 seconds, but you have to reboot for this change to take effect. So please reboot after installing Sandra if the above happens.