Hi, are you playing with the Standard clubs? We recommend this to begin with. The cause of the tempo Slow/Very Slow may be if you're holding the club too long at the height of the swing? Try and keep it to one fluid motion. It should be the same whether W or I but yes, speeding it up is not necessarily the solution but rather the fluidity of the swing throughout its whole motion. I could be wrong but I know when that happens to me, it tends to be because I'm holding it for a fraction too long. Takes a bit of practice to get it right consistently. Hope this helps. Others on here may have other ideas, too.