[] FPS drops in Grava'Thul, the Voiddrinker

I am a Cabalist and use many pets.
FPS drops to single digits when “Grava’Thul, the Voiddrinker” glyph is laid at the pet’s feet.(Or something else)
My CPU is a core i5 10400 and GPU GTX1050ti I usually maintain 60 FPS.
Version had no problems.