I am getting this issue on a very regular basis and am running out of ideas to resolve it. My drivers are up to date, so I don't think this is an issue. I am receiving the GPU failed error upon rendering at times that are difficult to predict. This seems to cause more issues when using multiple unity materials on the same object, but I cannot tell if this is the cause.
Here are my specs:
Processor: Intel® Core™ i7-6850K CPU @ 3.60GHz
NVIDIA GeForce GTX 1080 Ti (x4)
Memory: 128 GB
OS: Windows 10