Is Netbackup can be supported for 31 policies and 600 jobs at a time ?

One of customer’s  server  does backups of 2 non-GEO testlab OSS:es.
There are about  31 policies and about 600 jobs in activity monitor .
Customer faced an issue where   Java heap space  of Netbackup GUI goes out of space and  they could not monitor the jobs status.

Is Netbackup can be supported for 31 policies and 600 jobs  ?, if yes how can we handle this case without the backups being failed.