Hi, it's not just Civ6, but all OpenGL drivers/apps which are affected. Known issue, and fixed in the Mesa 19.2.4 emergency release: https://lists.freedesktop.org/archives/mesa-dev/2019-November/223773.html https://gitlab.freedesktop.org/mesa/mesa/issues/2072 https://www.phoronix.com/scan.php?page=news_item&px=Mesa-19.2.4-Released Regards, David