So far the only way that this has been fixed is with a custom ROM (using their own custom launcher which is average at best) or using Lawnchair with QuickSwitch (requires root, and it is like the best shot you have to have smooth animations with a more customized launcher).
I’m not sure why other Android OEMs are unable to fix this issue.
So far the only way that this has been fixed is with a custom ROM (using their own custom launcher which is average at best) or using Lawnchair with QuickSwitch (requires root, and it is like the best shot you have to have smooth animations with a more customized launcher).