My suggestion: Return the guardian spawner rate back to normal. and reduce the rates of crystals drop and put more into the shards dropped. I've noticed there was a HUGE difference with my farm lately. the guardians dont spawn as often and the amounts they spawn out of the spawner has been decreased. For those who actually spent money and/or through trade. should be given to what they attended to buy in the first place. Also, if you want these spawners this low of spawn rate. i reckon they be easier to obtain.