This switch only needs to be added if the POA is crashing or if the POA is experiencing slow performance due to memory usage after running for a long time. The switch is added to the POA startup file. Adding the switch without one of the two issues listed here will not harm the running of the system but it will also not enhance it.
The switch is --spawnsoap
Add the switch only if the POA is running slow after a long time or if it is crashing.