You need to change the Tomcat memory settings to allocate more memory. This should have been done when Asset Bank was installed - it is mentioned in the installation instructions and in the advanced Installation page.
First, run the tomcat8w.exe or tomcat9w.exe program from the [tomcat]/bin directory on the application server.
On the Java tab, you will see the initial and maximum memory pools. Maximum memory should be set to half of the available RAM on the server and initial memory should be half of the maximum memory. For example, for a server with 16GB of RAM ( the minimum that we recommend) you should have the following set:
Initial memory pool: 4096
Maximum memory pool: 8192