I'm seeing lots of blocks mined by a third party which then sends out bursts of those blocks to the main chain and causing huge network reorganizations invalidating a lot of legit blocks on my side.. Is that intended behavior during your hardfork ? Maybe you should release the wallets to the public already ?
Sounds like a 51% attack - I'd assume they've lost control over the network and the network update is to try and retake control!
Can any of the Gamecredits team address this?