So, you have no idea why Cryptopia consolidating didn't cause the SIGT network to overload. Got it.
But now network is really unstable. What is the reason?
I never saw the SIGT network being overloaded. When Cryptopia opened the wallets for withdrawal for the first time a few hours ago, many coins took several hours to arrive. I tested sending to Yobit from local wallet during this time and the SIGT coins arrived immediately. So I concluded it was not a problem of the SIGT network. Maybe the syncing at Cryptopia's end took some time.