Are reoccurring temporary drops in hash rate normal?

[whoismoses]

All, I have several rigs and I tend to see this once in a while. However, I am building a new rig and it seems to happen every 10-15 minutes. Is it normal for has rates to drop by 30% or so per card (usually not at the same time) from time to time? You can take a look at the highlighted sections in the image link below.

[fapar]

All, I have several rigs and I tend to see this once in a while. However, I am building a new rig and it seems to happen every 10-15 minutes. Is it normal for has rates to drop by 30% or so per card (usually not at the same time) from time to time? You can take a look at the highlighted sections in the image link below.

Hello!
It is possible to subsidence on the electrical power. Which power supply unit and which cards are connected to it? Does the power supply have enough power?

[whoismoses]

I am running 3x RX 580 8GB cards on a 750W PSU. I don't think that should be an issue. Do you? On my there rigs I have similar setups with 750W and 850W paired up 3 GPUs each.

[whoismoses]

I tried a slightly larger PSU, it did not help.

I think I solved this by removing...

Code:

-asm 2