All my 0 tick farms as well as the public ones are completely broken.
They don't work seem to produce in the speed of 0 ticks or just stops the growth of the material being produced all together.

Can the 0 tick farms be fixed?
Will the 0 tick farms be fixed?
When will the 0 tick farms be fixed?

Was watching YouTube and Apparently they will not work in the new update so won't be around for too much longer.
Just a theory but all these new farms that have popped up on the server lately may be causing the frame rate issues.That or the huge amount of mob entities.

0 tick farms are broken as the bug that causes them has been fixed.