Don't mean to sound like an ass Sharky but it sounds like you were setting this game up for failure from the beginning.
No offence taken.
I'd seen videos and heard the thoughts of people whose opinions I value, and the general consensus was that the beta (and by a slightly limited extension BF3 final) was a huge letdown. I'm not one to go "so and so said it's rubbish so it must be OMG", which is why I downloaded the beta to try it for myself - at this point I was thinking it couldn't be as bad as some people were making it out to be, how could DICE screw up a game as huge as Battlefield? Right?
Getting the beta downloaded was a hassle enough as Origin kept randomly pausing it for no reason, and then there's Battlelog which, to be frank, completely stinks. It might've been good if it was just a stat tracking/social service akin to what COD Elite will be and the server browser was in the game but EA being EA had to put their mitts in it.
Got into a game, ended up running around in circles for a couple of minutes as I adjusted to the slightly different control scheme vs BC2, got shot. Respawned, got shot again, this time with the deathcam showing a tree. For the next five or so minutes I spent my time getting killed in a fraction of a second by people I couldn't even see - not only are the player models hard to distinguish from the environment, it seemed as though the player name wasn't even popping up over an enemy's head when looking at them. Grenades and bullets were rolling around corners, 80% of the deathcams involved someone that was prone, climbing over obstacles was unbearably awkward and the gun sounds, as in every FPS so far, are worse than GT5's vacuum cleaner engine sounds.
I wanted the beta to be good, but for me it didn't turn out that way. In my eyes DICE just copy+pasta'd Bad Company 2, made the movement a little bit better (movement in BC2 was horrible so that's not much of an accomplishment, mind),
changed uglified the HUD, made part of the game into a website, added seemingly pointless gadgets like the flashlight and slapped a new sticker on the thing. Battlefield 3? More like Bad Company 3 imho.
But hey, at least it alt-tabs really fast like they claimed!