The solution is on your phone itself. You have the freedom to access and modify the developer's options. Everything is there; explore it wisely.
On your phone settings, look for ''About Phone''.
Go to Developer options and find
Under each animation, change the setting to ''Animation off''.
Animations slowdown the performance of your android phone. However, if your phone is running out of space, cleaning the home screen and closing recent apps can help to fix the problem. If ever the above solutions didn't work, backup your files then perform factory data reset. Performing this tricks will also save your phones battery life.
Image source:
thewirecutter.com
Thanks @scrooger for the text divider.