I'm willing to put up with 900p if the framerate is rock solid. Not asking for much here. 1080p is amazing, but if it comes to the expense of framerate, I will always prefer a scaled down version in terms of fps and resolution. 30 fps is nothing to brag about nowadays, when a capable pc can run most of these multiplats at double the fps, but for those buying on console (where the thought of this running at 60 is impossible) 30 locked would be amazing.
If the game suffers a lot in that department than I will pass. Had enough of shitty performing AC games on my ps3 last gen. Everything else in this game interests me, the setting, the customization, the apparent changes their making in the parkour, combat and mission layouts. But I will definitely wait for some tech analysis before buying this one, and I'm on ps4. Ubi doesn't inspire much confidence. Even though AC 4 ran pretty damn good, their constant PR fiascos in the past weeks have shook my confidence in this product. If it runs well, I will buy it, if not I won't.