https://wccftech.com/ac-odyssey-pc-hdr-ram-1-03/

Yesterday we covered the day-one 1.02 update that Ubisoft will be releasing upon the game’s release this week, and the publisher has now also provided additional details on the 1.03 patch for PC, PlayStation 4 and Xbox One.

The game is already available for those who pre-ordered the Collector’s Edition, and apparently, there are several PC-specific issues that need to be addressed, including a performance issue for those using single channel memory, and an HDR issue.