I quite liked Death of Stalin too. At first I thought the main characters speaking in their native American or English accents while portraying Russians would be distracting and shit but it works and after a while you don’t really notice it. In some respects it adds to it. Stalin having a “well ‘ard” Cockney accent was hilarious. I’m a bit of a history buff and watched many documentaries on Stalin, but even without that I think most would still find it funny. Compared to Red Sparrow where she fades in and out of a Russian accent, that was probably more distracting.