See, this sounds like:
Personally I totally agree with the OP that the zergs weren't enjoyable at all. Not only did they render tactics useless but they also made me lag so much that I couldn't even play the game in most of these situations. However, I'm not very worried about this since, as said, in the 1st BWE most people were playing level 1-20 characters. This will also be the situation in launch but I'm sure that it will get better over time when the amount of new characters created per day goes down.
1. I'm angry at my computer for not being able to run Guild Wars 2 well.
2. I really, really hate other people, camaraderie, and having to share. I don't want to work with them and I die a lot because of it.
3. I was a raid leader in that other game. I'm a control freak, I can't stand people not obeying my desires. Which is annoying because they're doing better than me.
I'm sorry, but that's just how it reads.
When I played the dynamic events, I had zero lag, no issues to speak of, and I watched people being clever. Cross profession combos, intelligent use of ground-based targeted heals, people bouncing mobs back and forth between them and using crowd control to keep the mobs on their toes rather than being able to stand there hitting away at someone, people backing out when they were in trouble, along with things like dodging out of attacks and such.
Were there people zerging? Yup. Did they die quickly? Yup. Did they continue to die quickly? Yup. And that's the thing, you're either going to learn how to play properly and with other people, or you're going to end up raging at and blaming the game for your inability to do so.