OK I think I found the issue I have, it has to do with my joystick. Once in cruise I unplugged my joystick and immediately the A/T was nailing the commanded speed. I also tried some speed change (M082 to M080 to M082) and the A/T responded immediately and nailed the new commanded speed) Strange I calibrated my joystick but I suspect a "drifting" button somehwere interfering with the A/T.