Look at this address finding literally every new block within seconds, network reports 5GH/s while difficulty is only 3!

https://chainz.cryptoid.info/glc/address.dws?7H4mwvXQkxhWhY75AcNAcmDCp1JbJPZPdX.htm

Funds are then sent to this address, nothing spent yet though..

https://chainz.cryptoid.info/glc/address.dws?7LtgZx2yhaNEFVBW91x3GuUJsDghxBNEaR.htm

This address finds hundreds of blocks within a few minutes, next the network slows to a crawl with new blocks taking multiple hours to be found.

Doesn't seem to be effecting how many new coins are mined daily, that's all staying on projected targets; just transactions are being held up for hours.