I am receiving an error message saying that more memory is required to compute the post test execution statistics.
I was under the impression that memory management for the controller is now automatic. In the past I increased the xmx but I thought is was no longer necessary.
Actually the memory management is not automatic but it's a percentage of the RAM available on the machine whereas before it was the same value whatever your configuration.
For instance, if you use the local LG, it will be a quarter of your RAM and half of your RAM for a remote LG only installation. So with a 8GB machine, the localhost LG will use 2GB max and 4GB max with a remote LG.
You can still use the "-Xmx" parameter option to force a different memory settings for the controller in the <neoload_install_dir>\NeoLoadGUI.vmoptions file. Remove the option "-XX:MaxRAMFraction=4" from that file.