Suggesting this for the second time, didn't dig out the old topic because i'll try and explain it in another way in this one.
Let's take the most popular granite maul combo as an example - Dharok's axe to double maulspecs. In order to do this, you need to do the following: Click on the opponent with a dharok's axe equipped, switch go granite maul, Click on your opponent, then two clicks on the special attack bar. My suggestion is to get rid of clicking on your opponent, so the combo would be faster and more fluent in a nutshell.
There Was an update, where equipping items didn't cancel combat, but the update quickly bugged out certain things like autocasting spells. Could it be possible to remove combat cancellation from jut the maul? I saw a lot of people suggest numerous times after the update the feature got removed so i thought i'd bring it back.