Question - are you someone who misses on the heel side of the face with irons?
I only ask as I've found the aggressive foam filled players/distance irons really tend to punish heel side vs toe side.
As someone who lives heel side of center I've seen it myself when I demo'd some p790's. I would hit a mix of great long ones and then a handful of much shorter ones. I realized if I strayed heel side of center the distance punishment was high vs my gamer blades. Average 7i came out about 3-4yds shorter vs the blades when including the heel miss.
Might be nothing, might be worth looking into for you.