I got massage "GPU4 CUDA error in CudaProgram.cu:264 : the launch timed out and was terminated (702)", and then the miner was hanged. What is this mean?
Check your OC and power limit, disconnect the GPU and try without GPU4 to see whats happening (to see if it's a specific issue with the gpu or riser - you can change the order of GPU), if the problem still persist try to reinstall the drivers with DDU.
Regards