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.
They are quite annoying to me, especially if I am multitasking fast, it will kinda get stuck in the middle of the usage… And that is not nice.