Aspyr Media qui s’occupe en ce moment des portages GNU/Linux et OSX du tout dernier Civilization explique que les développeurs rencontrent des problèmes de performance avec ce dernier. Dans les faits la mise à jour du moteur de Civilization 5 vers direct X 11 et ensuite la conversion en OpenGL semblent poser quelques soucis aux drivers GNU/Linux existants, en gros ça rame ta mamie.
Our current focus is on improving performance. So far performance has been the biggest development hurdle as we’re facing an engine based on Direct X 11 vs. Direct X 9, which Civilization V was based on. This upgrade means lots of new driver issues and development hurdles for the team. This is also why our current preliminary system requirements are much higher than Civilization V or the Windows PC version of Beyond Earth. However, our development team is extremely good at what they do, and we expect to make significant strides in performance improvement over the next several weeks.