If your device has more than 60 hz, perhaps that feature might mask this a bit, but definitely stock launcher will always have smoother animations than third parties if you are using full screen gestures, I am currently in MIUI (I was on AOSP before) and well, I can’t even install another launcher here, but I can confirm it is as smooth as it can be.
That seems to work pretty well for me. Predictive back doesn’t work but I think I can survive without it.
If your device has more than 60 hz, perhaps that feature might mask this a bit, but definitely stock launcher will always have smoother animations than third parties if you are using full screen gestures, I am currently in MIUI (I was on AOSP before) and well, I can’t even install another launcher here, but I can confirm it is as smooth as it can be.