Jeff Gerstmann (Giant Bomb) : The frame rate in Titanfall is uneven on the Xbox One and though it's usually fine, it can get downright nasty in specific situations.** In one Last Titan Standing match--where every player spawns in a robot suit--several players crammed their mechs into a tight area and began duking it out, and **the frame rate dived down to what must have been single digits per second. Even out in wider areas, the game feels a little hitchy from time to time, and there's noticeable tearing throughout. The visuals in Titanfall look nice, but that's mostly due to some solid art and interesting design, not the performance. As of this writing, I haven't seen enough of the PC version to know how well it runs.
http://www.giantbomb.com/reviews/this-is-not-a-titanfall-review-yet/1900-630/
Technically speaking, those battles look impressive, but my eyeballs remain un-melted. Titans, pilots, maps, and weapon effects are all perfectly acceptable, save for the occasional dip below the otherwise-normal 60 frames per second in a huge multi-titan explosion
http://www.ign.com/articles/2014/03/10/titanfall-review-2
Of course, an online multiplayer-only game like Titanfall is only as good as its servers, and how they fare when the eager hordes descend on them remains to be seen. The About the Author section of this review contains more information on the circumstances in which I played it, which weren't always ideal. I experienced a few laggy matches and occasional frame rate issues, but these in-game hitches were the exception to the rule during the many hours I played.
http://www.gamespot.com/reviews/titanfall-review/1900-6415690/
Structurally is where Titanfall shows its limitations, and the reliance on the same old standard match types feels like a concession to the restrictions the rest of the game kicks against. Technically, too, it's not quite the polished gem some may be expecting. Textures don't always impress when wall-running brings you close to them, and the frame rate can still chug when the action gets intense. There's noticeable screen tearing and load times can be a chore. Character models and animations don't always stand up to much scrutiny either. None of this is particularly harmful, but it does take the shine off what many will expect to be a pristine, console-justifying experience.
http://www.eurogamer.net/articles/2014-03-10-titanfall-launch-review