If the game refuses to read the downloaded file, it is due to Ubisoft's account-bound save encryption. To bypass this:
Objectives in "The Braddock Expedition" failing to trigger. assassins creed 3 sequence 3 save file verified download
The resources tab for Assassin's Creed III often contains verified, clean save files used by competitive runners. If the game refuses to read the downloaded
Extract the downloaded file if it is compressed in a .zip or .rar archive. assassins creed 3 sequence 3 save file verified download
I can provide the exact and specific installation tweaks for your setup.
The save location depends entirely on the platform or launcher you use to play the game.