Wow Freezes and disconnects Error 51900314

So since the latest patch 8.3.7 i’ve been getting freezes in dungeons.i tried alot of things but cant find a solution can someone help me please?
these are the things i did

  • Remove all addons
  • unistall the game
  • repair the game
  • lowered settings/blocked fps
  • reseted my router

P.s my computer is connected by a ethernet cable and i have highspeed internet

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