You can't hide the old eyes and slow movements of an aging actor.

Rating: 5/10 (3 December 2019)

If you can put up with the first hour and a half it does catch you up in the end because DeNiro is believable at that point and you see some actual humanity from him (his feelings are mostly just for himself though).
The anti-aging CG needs to be stopped right here, right now. It does not work because you can't change a person's old eyes or the way older people move. The effect of digitally smoothing out the wrinkles on a face just takes away all the edges and character, so DeNiro didn't look like a young DeNiro, rather he had a flattened blank looking face that at times looked like a colourized John Wayne, and at other times looked a bit Barbara Walters when they started using thick soft focusing to cover her age.
I would much rather see a younger actor play DeNiro - whether he looked like him or not - One who didn't have creepy old eyes looking out of a flattened out face. Younger people's eyes are wider, more energetic, not so tired.
There were many instances when a younger actor would have made (action) scenes faster, quickening the overall pace of the first two thirds of the film too, and that would have been a huge relief.
It is not worth 250Mm price tag, but is worth a watch for the last bit. Just go into it knowing you have to wade through a lot of boring material to get to the good bits - and don't expect too much from the 'good bits' either - maybe it just felt good because it was a relief to actually see the character in his own skin after all the creepiness (with a bit of makeup).
I LOVE Stephen Graham and did not have a problem with his accent at all. The cast is stellar and the film solid otherwise, if you like lowlife old gangsters, that is. Nothing redeeming at all if it's not your genre.