Nvidia 3070 turned off

Hello
I have 4 cards 3070 with 2 psu
overclocking
-600 2700 123

i have 2 or 3 cards are going to sleep suddenly and the rig didnt crash
i must reboot the rig to turn them on
i dont know what is the problem with them
i have tried another overclocking like
-200 3000 130
0 0 0
-500 2700 134

the temperature is normal

can any one help me

I’m having the same issue with my 3070 Ti, did you figure out what the issue is?