addendum 2

config/system.config

@@ -137,7 +137,7 @@ system.controlflow.maxusedmemory = 524288000
 
 #Preferred used memory, in bytes. Once each replica decreses its memory to this amount,
 #it accepts requests again from clients. It must be lower than system.totalordermulticast.maxusedmemory
-system.controlflow.preferredusedmemory = 262144000
+system.controlflow.preferredusedmemory = 393216000
 
 #Timeout for the client-side retrying mechanism, in miliseconds
 system.controlflow.timeout = 1000