I have crashes with 5.0b and GTX1080Ti (11GB VRAM), driver 446.14.

CUDA error in CudaProgram.cu:456 : unknown error (999)
GPU1 search error: unknown error
Fatal error detected. Restarting.

Display driver nvlddmkm stopped responding and has successfully recovered.

This was not happening with older versions.
Could you please advise.