Assassin's Creed Unity certainly has its fair share of issues, but you'd hope poor performance wouldn't be one of them, especially on the newer consoles. Sadly, 30fps might as well be the Holy Grail in terms of ease of attainment. A tweak recommended by Ubisoft itself is doing the rounds that might help make things snappier, but does it actually work?
If you head over to the publisher's official forums, the current issues thread for Unity suggests players who aren't engaging in multiplayer should disconnect from the internet. After suffering at the hands of low frame rates and constant stuttering, it's not the sort of conclusion the average gamer would come to, but if Ubisoft is saying it's the goods, why not give it a try?
And that's exactly what people have done. In fact, over at Eurogamer, David Bierton had a chance to test the performance differences between offline and online on the PS4. The conclusion is not so positive:
We've now tested single-player with the console online and offline, and report no game-changing difference to the overall experience. In some cases, running offline is faster, while in others performance is the same or lower. If there is any improvement, it's very, very small and we're inclined to think this is just down to the variation in engine load between the two sessions. Certainly, there's little evidence to suggest that running offline brings us appreciably closer to the target 30fps.
Comments on a Reddit thread regarding the tweak provide a larger sample size of players running a variety of platforms, with some reporting frame rates doubling (on the PC at least), with most others stating there is a mild, but noticeable improvement.
So, the verdict? It can't hurt to cut yourself off and see if it helps. Hopefully Ubisoft will nail down the cause of the problem and fix it in a patch so you won't have to take such drastic measures.