Now, before going nuts over it, let me assure you of something — you are only required 4 GB if you plan on running the game at 4K resolution. (jamiex66.com)
If you can't run a game on maximum graphical settings, you'll often have to choose settings to decrease, and it helps to know what the settings actually do. (howtogeek.com)
One of the biggest complaints against the PC version has been how poorly it runs on computer hardware that should be more than capable of running the game well. (waypoint.vice.com)