It looks like everyone turned on their new Antminers today.  I'm assuming GM just runs all of their farm all the time and it would not matter if people purchased more HASH?  Or if someone came along and made a large purchase on GM would they then spin up the miners?  I can't imagine them sitting with machines turned off.

Looks like mount Everest  https://bitcoinwisdom.com/bitcoin/difficulty

might be 20% gain this time.....