A large part of the time in which the problem appears to me, is when I need to edit a discovery in very large networks. I have one "10.0.0.0/20" (ie 4,000 hosts), and need to edit some configuration discovery. It simply no longer updates, nothing changes and then only solves cloning and disabling the previous discovery. Now everything back to normal. I realize also that some time later the problem comes back.

This proxy, I have several Discoverys, around a 16 totaling 65,000 me possibilities of discoveries.
She also has several "discovery checks" (around 5) and every 3 days, I have the same problem.