I have posted on ipcamtalk but no responses yet.  I am still running 471.41 Nvidia driver and since the downgrade, my computer has not frozen or crashed at all.  I believe the newer drivers are making the XPS 8940 unstable. Update=Ever since I downgraded my Nvidia driver to 471.41, my Dell XPS 8940 has not crashed or frozen.  I used to get LiveKernelEvent 117 and 141 but not anymore.  The system has been stable.
Any updates with your issue? My XPS 8940 is having the same problem and it's incredibly frustrating.
XPS 8940, randomly freezes for 3-5 seconds, reboots