Add the following Java memory tuning options to the wrapper.conf file?
edit the file C:\Program Files (x86)\QueueMetrix\LAMAXU\bin\yajsw\conf\wrapper.conf (if this is the location you installed into)
Uncomment the Java option lines below,
wrapper.java.additional.2 = -Xms250M
wrapper.java.additional.3 = -Xmx250M
This will limit the memory heap memory usage of Lamaxu to 250Mb.
NOTE, you can adjust this to what you like however the values for each property should be equal. You'll may start get out of memory errors if you set it too low so set it as high as you can.