It was Patch 1.17, the one that was released alongside of Late Night. It is no longer necessary to use any Large Address Aware tricks to get the game to use up to just short of 4 GB of RAM. There is still an Options.ini instruction set all over the web through which players think a default setting of 2 GB resides, but it really says 20 GB and that's for the game's script heap size, not RAM usage. It's probably not overly harmful to change that setting to 40 GB, which is what these players are doing when they edit it, but we wouldn't advise doing that as EA must have chosen the 20 GB value there for a reason (known only to them).