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.

Have you already modified that file? I guess you are using a 5.xx version right?

If you look at the <install_dir>\conf\agent.properties. Do you see that option?

That's weird. So if you look at the modification date for these files, they have the same compared to the other installation files?