Performance degradation

We have had to institute weekly restarts of the APM services.  The services are restarted on Sunday evenings.  As the week progresses and the APM process memory consumption grows, the users start to report performance and concurrency issues.

We are configured with 2 application servers running 4 processors and 12 Gig of memory each and 32 Gig of memory on a SQL 2012 server for a 60 Gig database.