At some point every body wants to know how to make chord changes faster and let me tell you I know a thing or two about making fast chord changes. To make your changes fast you have to practice them slow with one continuous, fluid motion from one chord to another and completely relax your hand in between the change so you can have more control in your fingers. Here’s an exercise to try. Pick two chords that you want to change faster and slowly change from one to the other while focusing on allowing your hand to completely relax between the changes.
Here is an video of me playing a song that I used this technique of practicing on.