I think the wonky facial animations came as a result of the brilliant idea to switch over from the Unreal engine to the Frostbyte engine halfway through production of the game. I know EA poured a lot of money into it, and it is quite an impressive and well optimized engine that works on a wide variety of machines with differing power, but I feel like that sudden change screwed the animators a little who took a lot more shit than I think they deserved.
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