This issues happen mostly when pt have 3~4 members and spam skills. FPS drop to 7~10, and never reach more than 30, maybe bcs game engine is very old, can't use full power of new CPUs.
My PC can play PUPG without drop FPS, and never face this issue in another dungeons, same for my friends.
Boss hit so hard, and due to this, hard to dodge those skills
Anyone suffer this issue? And Is DS team have plan to check this?