FPS drawdown

I want to ask you to rework the textures of some quest objects in the initial locations of the blood elves. The fact is that my computer (quite strong) can hardly cope with these objects - strong lags begin, and sometimes it even knocks out of the game. While I crossed the path of the dead with these objects, the game knocked out seven times! In the whole world of WoW, I don’t encounter anything like this anywhere else, the FPS is always above 100, everything is beautiful and smooth. What have you done with these objects? The video card obviously does not want to work with them. I can't figure out how to post a photo, sorry..
For example, these are objects from the quest Corrupted Soil or Unstable Mana Crystals