Are you sure about good and stable connection to the server? I had something like that before, and more likely because of the bad connection. I dont know the real reason, it doesn’t really shows to me anymore.
(Note) It depends on the ping too, check the server region to check the closest region to you.
There’s 2 different ip’s, one in the EU and one in the US.
auto routing(to the closest server): t.dark-gaming.com
eu region: eu-fra-2.t.dark-gaming.com
us region: us-tx-1.t.dark-gaming.com
Have you tried just using /item <itemname or id>? And please add some images or a video because I’ve never experienced this before, only lost connection screens.