I had a similar issue with an r730xd. Spent ages troubleshooting and replacing PSUs. Ended up being a fan I had plugged into the internal USB to cool a GPU. Removed that and never had any power issues since. Just incase you had done something similar
Trying to get someone to reframe their perspective in such a aggressive manner helps no one. Everyone has gaps in their experiences so let's assume the best before lashing out
I had a similar issue with an r730xd. Spent ages troubleshooting and replacing PSUs. Ended up being a fan I had plugged into the internal USB to cool a GPU. Removed that and never had any power issues since. Just incase you had done something similar