Thank you for your comments. I did some more reading and it seems that from what I've read (comments on the game and similar) is that origin is a soso game and odyssey is suppose to be much better (both as a game and with regards to technical issues) so I think I'll skip origin and just wait for Odyssey game of the year version.
I have i5 4570K CPU and AC origin and odyssey runs 95% to 100% on all 4 cores. But this is like 4 or 5 year old CPU now. I have 1080 Ti to go with it and I am running ultrawide at 3440 x 1440 with max setting (only turned down volumetric clouds to medium) and I can get 50 - 80 FPS. So if you are playing at 1080p you won't have any issues with decent CPU and GPU. The low FPS take place in cities with lots of NPC walking around.
It has never created any issues for me. Last night I did 5 hour marathon of odyssey and not a single crash
Note that although it run CPU busy, I have not seen CPU temps go up more than 50C.
Note that this game benefits from multi cores so you will get better numbers on i7 etc.
The thing you have to remember is that these games run on xbox and still looks good…