So as everyone knows there is a bug in minecraft that effects servers with render distance less than 10 (might be 9)
the bug keeps spawns from clearing out of the spawn radius of the player in the chunks that are unrendered as i understand it.
either way the hostile mob cap is hit in just a few minutes and does not go back down till the next server restart,
this makes mob farms inoperable except for directly after a restart it also makes hardmode an incredible cake walk atleast for players like myself who have been playing survival for several years
My suggestion is simply to decrease the server restart interval so that mobs are less scarce and people with mob farms have a chance to get their farms working more often than once every 3 hours.