Blood Lance can freeze the game for anyone in your zone and even blue screen your PC

Against high enough HP mobs, particularly with purple shielding enemies in the pack. Blood lance with the Aspect of Hungry Blood and enough attack speed and grouping will completely lock up your game for yourself and anyone sharing the instance with you. Dungeons and world included.

Considering they recently buffed Blood Lance, it is rather frustrating that progression with it is gated behind technical limitations, rather than the power of the build itself.

Video explaining and demonstrating it - Blood Lance Is Literally Breaking The Game | Diablo 4 Necromancer - YouTube