PCs in zone disappearing - packet loss and lag spikes

[Nzoe]

I don't know a better word for this, and I'll be scouring the forums shortly for "lag" since I don't know a better word for it.

When in a zone with other people, they disappear, then reappear some seconds later. The packet-loss meter drops below 100% every second or two, and with multiple windows, one will have a decent ping, and others will sometimes have 1k+.

My main question is, is there a better term for this, or a better way to describe it for searches? "lag" is so generic.

After that, if anyone has experience, any off-the-top-of-your-head responses would be awesome.

Thanks in advance.