Hey & welcome to GT!

Originally Posted by: texbrackdelmonte007

The only chord I struggle with is the C major I can play it, but where I find it tricky is if I am playing faster or changing from a G etc

First it's important to look at mechanics. Take a close look at your finger placement. Think about exactly what fingers, or figner parts, are missing which strings, or muting strings. Try to adjust microplacement of fingers on strings to get a clear, clean sound from the chord.

Once you've got the mechanics sorted out, then do targeted practice. Drill just the thing that is giving you trouble. Don't mix in strumming in time, strumming patterns or songs, etc.

Play C chord once. Stop.

Play a different chord, G for example. Stop.

Repeat.

Make that an extended part of your practice session. Go slow & deliberately. Repeat as often as necessary. Gradually speed up.

Hope that helps!