The 1.5.1 update was a standard patch for the PC version of the game. Key fixes included:
Resolved issues where certain achievements like "Serqet's Carapace" would not unlock. Assassin’s Creed Origins Free Download v1.5.1 (...
Assassin's Creed Origins - 1.4.3 | 1.5.1 Patch Notes : r/assassinscreed Assassin’s Creed Origins Free Download v1.5.1 (...