LPH never lags, this is some kind of fairy tale. Area damage cause all lags and some skills like Black Hole.
The best way to evade lags is to play on right time on right server. Evenings are bad usually, but I haven't seen 90-100 seriosly lagging in this patch, playing from Russia - our ping is much worse than swedish.
Try to find good server, there are tools that show IP adress.
Untill they dont change their crap servers always will lag its shame rich company to use shit servers such as windows one...good idea was our clients to change to 64 bits but why they keep their servers 32 bits...