Doesn't matter what I do. If I touch any other miner - this remote agent shuts down mining.
Has anyone else seen this bug?
Smells like network sourced issue. Assign totally diiferent static IP to that miner. (like, if you have 192.168.1.2--10, make it 192.168.1.178 etc, far away from others)
Use a different PCIe network card. They should be cheap.