This is Work Graphs, a tech previously in testing but now officially introduced for DX12. It’s a feature that ... between the CPU and graphics card, cutting out overheads in that respect, ...

The first and foremost step to fix DX12 FPS drops in Rainbow Six Siege is to update your graphics card drivers. The drivers often need to be manually downloaded after a game’s update, and not doing so ...

meaning video cards running DX11 won't be able to run the game after the move. The decision has been criticized due to Ubisoft's DX12 implementation in R6 that has led to stuttering issues and ~8% ...