ppp active print hangs (3.20-30 and 4.1 too)

RouterOS General
1

On a pc running RouterOS 3.20 (and 3.19 too), acting as pppoe server for ~150 users sometimes the command ‘ppp active print’ stops working. It just hangs until ^C, then prints the header and that’s all. The command ‘interface pppoe-server print’ works as expected. New users cannot connect.

Please help.

2

The problem happens once in a week, sometimes more often.

3

The same problem happens with 4.1, once a day average (400 pppoe users)

It only happens with multi-cpu=yes, so I have to run it with multi-cpu=no.