To me, nothing on Android seems to work on full speed, ever and I am seriously wondering if I have developed some strange and unreasonable cognitive bias (which would be scary).

You can go into a store 1 day after <XYZ> flagship release, try the hardware and have it stutter through menus like a Walmart PC trying to run Crysis 10 years ago.

Huawei phones seem to be the only ones getting Android to feel somewhat smooth, much better than "vanilla". Not going to buy Chinese telco phones though.

I like Android for some things but performance and feel isnt one of them.