4 is the much better game in my opinion, but... I actually never finished it. Liked it well enough, but like all Ubi games after a certain period, it's full of bloat.
5 is an awful, awful game. The game is separated by regions, each controlled by a boss. Every time you make a certain amount of progress the game launches an unskippable "trippy" sequence at you, you get kidnapped, taken halfway across the map and have a scripted long ass escape sequence. It does this shit constantly. It also doesn't give a shit where exactly you are the moment you hit that threshold, you could be in the middle of another story mission, doing a challenge, etc. It will eat your progress, take over and force you to engage with this.
It got to the point that any time this was going to happen, I literally set my controller down and go do something else. You can skip cutscenes iirc, but this game has that thing where it throws 5 different cutscenes at you one after another, and the story is not good. Like, it's actually terrible even by Ubi standards. I would recommend any FC (2, 3, 4, Primal, even New Dawn) before 5.
That said, I did actually finish the game, just out of spite I guess. It looks gorgeous too, but I will rail against it any chance I have.
