A9 Zmaster restarts

[baladio16000]

I have two A9 Zmasters, and they can go days without a restart, or sometimes they restart like once a day.  Is this normal and is it due to a network thing in the mining pool?  There are no temperature issues, max is about 72C in the middle board, 65 on outer boards.  Fan is only running about 15-40%, which should indicate that it is not overheating.

[RentGPU]

Nothing in the mining pool side can make your gear restart , it's that rubbish unexperinced silicon industry