If anyone wants to help me try out a possible solution to the network issues please try pulling
https://github.com/digibyte/digibyte/pull/40. My theory is that the network is basically DoSing itself and that if enough nodes stop doing that things will return to normal.
We are testing this out at the moment with a 4.0.2 build. It appears some of the propagation changes may be adding to some of the problems mining pools are experiencing right now. In testing we simulated multiple miners and multiple nodes, but in a real world setting with many more variables there is always an unknown. Stay tuned, we are working on it. Cheers.