this happened before the new patch as well, but figured i'd wait for patch and see if anything changed...

after 5'ish minutes of gameplay, the monsters just freeze and i can no longer hit them. i can still run around and use abilities, but for some reason stamina also doesnt regen. i have tried everything i know of, including a full reinstall and the problem still persists.
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there is no problem at all in offline mode, which leads me to believe its a server issue. also, speaking to my friends playing, none of them have this issue..

edit: also no problem in story mode. the problem is only in endgame.