There is no way in hell this 'game' took four years to build. No way. That's the biggest load of nonsense I've heard regarding this thing - up there with the 'PC for PC blah PC' lie. An actual working patch that actually fixes actual problems is taking so long precisely because this 'game' was slapped together much more quickly that that. It was rushed to exploit Xmas markets. Four years should not have resulted in anything remotely resembling this situation as it currently stands. 'Four years' was birthed next to the 'PC blah PC blah PC blah' burble in the marketing cesspool.
If true, however, this 'four-year-development' thing leads to an unpleasant realization - that if it did take four years and this buggy/broken PoS was the result... that points to some massive indifference and would explain the aggressive silence here and spitting vitriol elsewhere they have for the PC, that ancient and dying tech and it's sad and doddering hangers-on. It also explains the gutless abandonment of engagement on their own forums. Saying they 'cared' once is irrelevant. The damage is done, the money is being rolled in and it's quite obvious they don't now.
Have you played Battlefield 3? I've been in the Alpha and Beta tests and had the stupidity to buy the final thing, and I can say that with Frostbite's later incarnations, the overcomplexity of the engine is a MAJOR foe of the fixability of things via patches.
There was a neverending carousel of "fix one bug, earn three" which, back in the days, made us all laugh at Epic Games for being lewsers (remember the early days of Unreal Tournament before intense patching made it into the legendary feat of multiplayer coding that it is remembered as nowadays?), but is now commonplace.
Basically, this game is a wonderful case of "using soap as building blocks for a lighthouse". It sort of looks like a lighthouse, can withstand wind and sun and maybe a little bit of a drizzle, but any serious waves or rain will wash it away. This is what you get for using an FPS engine that didn't do that well in FPSes, as an engine for an absurdly complex RPG - there's tons of obvious slapdash compensations for it being an FPS engine (the WASD-controlled limited-movement clipping camera in tac cam mode on uneven terrain is the most blatant example).
One can counter with the fact that Unreal Engine, began its life as an FPS engine and was used to make all sorts of games, from strategies to point-and-click-adventures to figthening games, and they'd be right. Except the Unreal Engine took half a decade and tons of games of questionable futureproofing to get good enough to not have games made on it look like new levels for the same FPS engine (a problem the Quake engine and Source engine as its descendant have NEVER managed to solve, for example). Even so, XCOM Enemy Unknown looked like a TBS UI slapped onto a cover-based TPS with lots of similar problems that DAI faces, except it was better-QA-ed to begin with (has nothing to do with the quality of the QA team, but rather the initial-list-of-issues vs QA team size; XCOM used an industry standard engine that has been in use for decades and had infinitely simpler game mechanics and TONS of established middleware compatible with it, DAI uses an engine that hasn't been used outside of a single game studio in never before).
However, there's only so much that you can excuse with the move to Frostbite - and in many ways, it's an IMPORTANT move, because BioWare will work out all these issues and hopefully Mass Effect 4 will have less problems due to the engine and more problems due to the ego of whoever replaces Casey Hudson, because it comes with the job, apparently.
Or maybe that IS the answer. That Mr. Gaider, or someone else, told the NERV EA Council that they couldn't ship the game as-is because the engine was poorly-suited to the concept, and they did the best they could, but they're building a spaceship with silly putty here and the damn thing won't stay solid even at room temperature, how could they possibly think it's ready for a space flight? And they said "Get in the damn mech, Shinji!" "Release it, we'll patch it after release. If they buy enough horse armour DLC."