Apparently if I'm actually doing pretty good against, say, a party of 5, decent or not, complain that I lag. My internet is perfectly fine, at a safe average of 6MBPS. (I'm the only one using it.) More than once this has happened. And trust me, I know what lag is. I'm sick of people saying this.
I'm sorry, but I don't think ND can patch nice people in as opponents.
On a serious note, people sometimes hide behind their fake name to treat others poorly. Others can't grasp the fact that they've messed up, so they'll blame lag. Sadly, this attitude looks like it won't go away easily. I recommend muting anyone that does this.
Probably playing someone on other side of the planet, if he is closer to host you probably do come across as lagging.
This could be fixed by a region filter, but ND hate smooth MP matches and rather everyone suffers.
They are stupid because they can't stand the fact that they lose.
I have lost many of times due to a bunch of BS.. (including being removed out of nowhere. )
Some people cannot accept losing. Even winning, I can still hear them talking about how the opposing players are lagging or camping and how the people should quit gaming while ahead. Sorry, however I treat video games as video games, not life or death situation.
I'm sick of people saying this.
The key is to not get upset by it, as your play will probably degrade. Often when someone is complaining about lag, the truth is they are just a mediocre player who lost the gunfight, and are rationalizing it by calling you a lagger. Enjoy your victory!