My points in posting in this thread are that I personally am getting tired of the PVP community slinging poo at each other and making us look like petty children rather than serious, fun loving gamers which ZOS should be listening to and helping.
I've started a new post in order to bring a very good comment posted by Turelus in another thread to the attention of more people.
Some people look a lot worse than petty children. In the past few weeks the terms "Crown zerg" and "Crown lag" have been thrown around a lot, and I've about reached the cap of my /ignore list (I'm happy to have intelligent debate or conversation, though I ignore people who just poop-talk or get abusive) for all the poop-talking reds who seem to have nothing better to do than to blame me for everything from game lag to the war in the middle east. There have even been two who after being reported for suggesting that I harm myself in rather significant ways haven't been online for about a week (I believe that they've been banned).
Lag is a universal problem. I run a group of 20 most of the time. It grows to 24 when we have needs for certain roles or more of our core comes online (I don't kick non-core people from group and replace with others unless they deserve it). When we end up somewhere on the map and there's already apparently 2 full groups worth of AD, we usually go elsewhere. Before our opponents start complaining about me, they should look at the tabards of the people around them. My group all run the same tabard. With regards to all the randoms (pugs/pubs/solos/whatever you want to call them) or other guild groups who show up and participate in fighting our opponents, think about what you're asking before you throw blame. If your guild is somewhere doing well, making good points, and another shows up (after large swords are on the map for a few minutes), will they go away if you tell them to? Most will not, and any who do - I tip my hat to you. Regarding the 10-15 randoms who have shown up in the hopes of getting side kills, if you /yell or /zone, "everyone who is not in my guild group get away from <insert location here>", will they do so? If they do, then you have a heck of a lot more influence than anyone I know of in the game.
The reds who seem to believe that I control all of AD are grossly mistaken. I manage the PvP Alliance guild for group leaders to communicate. Managing the guild means assuring that everyone has the correct rank (Guild Representative for guid leaders, Group Leader for group leaders, and Comms for people who type/talk on behalf of group leaders). We have some that communicate well and coordinate, others that don't, and even some who poop-talk our own faction when they are doing something that is completely unsupportive of what should be the faction's main objectives (I know it's subjective, though most of AD with good common sense will agree that dethroning an opponent emperor down to his last keep should take precedence over flagging Kingscrest when red have Farra and Arrius - especially when the AD group at Kings has 24, the only other AD group near Chalman has 14 people, and there are visibly more than 30 reds in the keep).
From my perspective, one of the major challenges arises when we've been fighting somewhere for a while and then the lag starts. The scenario is something along the lines of the following: I have a full group, and we've been fighting somewhere for long enough for it to be interesting. More fighters from both sides show up such that the lag is significant. We see two relatively good guild-groups on our opponent's side, and mostly randoms on ours with perhaps another guild group that does not run optimized builds or team compositions. We know from experience (and logical reasoning) that as soon as we leave, regardless of lag, the rest of AD will be wiped. We thus have a dilemma - should we leave to *maybe* reduce the lag, or stay in the hopes that our presence will help win the lag fight?
My decision when leading is usually based on which keep we're fighting in. If it's one of our home keeps, we stay. If it's our opponent's home keep, we leave. If it's an outpost, then I ask for a vote in party chat and majority wins. The only consistent exception to that is for dethroning an opponent emperor - and even then, it depends on if it's someone who was well socialized and taught good manners at a young age or someone with the attitude of a 3 year old denied candy and the grammar skills to match.
There is a very big difference between opponents and enemies. If you're on my friends list, you're an honoured opponent. I consider people like Anon, Gromfring, Araxleon, Frozn, Crystalized, Asneakyhabanero, Wren, Zazeer, AoE BBQ, and others to be honoured opponents. There are very few people who I consider enemies (there are perhaps a dozen total). The remainder are simply opponents, or not worth the energy of assigning a category.
TLDR: With some few exceptions of groups standing still and spamming AoEs, individuals and guilds don't cause lag, it's a symptom of a bigger problem with the game.