Cinematic settings is rendering a lot more things that before, like the way it interacts with transparency (Cinematics settings set High Quality reflections that didn’t exist in 5.0) and multi-bounce lighting for lumen wasn’t available on 5.0 (pretty sure Cinematic settings force it to more than 1) . Same with TSR it’s forcing History Resurrection that didn’t exist in 5.0 and there are probably a lot of other things.
So this comparison is meaningless.
There is absolutly no doubt that 5.5 is faster than 5.0