Do you see a message like this one in LogCat?:
W/Adreno-GSL(32053): : ioctl fd 34 code 0xc040094a (IOCTL_KGSL_GPU_COMMAND) failed: errno 35 Resource deadlock would occur
We are seeing this crash the S7 Edge with the Qualcomm Adreno (Snapdragon) hardware, but not on the regular S7. The edge is a hardware revision later (Rev0.7 for Edge vs Rev0.6 non-edge).