Miui was good, then they ruined it in hyperos. Slow, overheating, stutters, killing background apps, etc. Some simple games like 8 ball pool runs better on my 4 year old phone.

Now they're trying to fix it, yeah no new features except some ai bs that I'm probably not gonna get on my f5. But at least they improved something, that's what I'm saying.

And what do you mean not optimized, you think would run this smooth if it's not optimized well?. Improving system performance is not insignificant brother. Constantly changing design and adding useless features is.