JVM Heap Size
The objects (such as Projects, Line Items, Resources, etc.) are stored in the Java Virtual Machine (JVM) heap allocation. Most of these objects are short-lived and are periodically cleaned up by the JVM’s garbage collection mechanism. As the number of objects increases, performance and scalability is affected by the available heap space in the JVM. Increasing the heap size is an easy way to achieve desired performance and scalability.
To increase the Workstation JVM heap size
1.Edit <installation-directory>/bin/CostOS.l4j.ini (ie for the installation-directory: C:\Program Files\CostOS_Workstation\bin)
2.Change Xmx value(ex. -Xmx8000m) (the default value is -Xmx3800m)
Note: please do not add from the first try the biggest number but do it gradually