https://wccftech.com/ac-odyssey-pc-patch-1-03-avx/ > Ubisoft has rolled out AC Odyssey PC Patch 1.03 which addresses the AVX CPU issues alongside improvements to performance and stability. > The update fixes an issue which prevents users from starting up the game when using a CPU without support for the AVX instruction set, also known as Sandy Bridge New Extensions. In addition, Ubisoft writes that the update offers various “quality-of-life” and usability improvement features.