Yesterday I teamed up with another 3 fellow DHs, all big big gunz build, and I notice I got crazy lag whenever encounter mob in rift, about 10 sec ++ delay.

Funny thing is, the chat channel isn't affected, then I was told it might be due to game client sync issue, rejoin the game will fix.

I remember when I stand inside the trial realm then suddenly everybody says "oh 34...". I was like "huh?" After a good 2 minutes only my toon killed, teleported to town and got a GRift 34 key. 

After rejoin the game, oh my gosh every resurrection took about 1 minute and another 1 minute before my toon can finally move. To add some salt onto the wound, we encounter the worst combination of elites: 2 packs of Champions mob, 1 with Jailer & extra health, another group with Jailer and Waller RIGHT AT THE ENTRANCE of the rift level. (U know, at GRift 34 even waller can 1 shot DH)

Needless to say yesterday was my worst farming experience, but still wanna express my gratitude to FabVader bro, in stead of kick me out, he says "Let's slowly finish it lor...". 

neway, someone else also suffer from this issue: Official Forum