A workaround for this issue is to increase the heap (memory) available to the Java applet. This can be done by modifying the Java runtime parameters as follows:
1) Open the Windows Control Panel and search using “Java” to locate the “Java (32-bit)” Control Panel entry. Click on the entry to open the Java Control Panel:
Note: If there is no “Java (32-bit)” Control Panel entry this may be due to there being multiple Java versions installed on the client platform. Locate the Java 32-bit installed in a folder under “C:\Program Files (x86)” (typically “C:\Program Files (x86)\Java\jre7\bin”) and execute the file “javacpl.exe” using right-click “Run as administrator”.
2) Click on the “Java” tab and then on the “View” button to open the “Java Runtime Environment Settings” dialog.
3) The default heap size is typically 256MB however this may be system dependent. The actual process memory size can be seen in the Windows Task Manager before the process terminates. Specify a larger heap size and test to see if the UI freeze remains present – increase as needed. The following example confgure a 700MB heap however up to 1GB (“-Xmx1G”) may be used (as this is a 32-bit process memory is limited):