Hello everyoneI'm enjoying the new PMDG B738 NXG. Realistic, very functional. But like any new product, I noticed some bugs:- When I click off the aircraft at the CMA, then when I press on LNAV and VNAV simply nothing happens. The button does not work, it lights up green. I have to act fast in speed manual or autothrottle.- When I'm in right of descent, the aircraft does not follow the schedule of the FMC. At this point the message "drag required" keeps popping up constantly. When you step into the autothrottle speed continues to increase. Speedbreaker and triggers the system does not seem to have no reaction, no drag on the aircraft.- On the ground, when start the taxi to the runway for takeoff, I develop around 20 to 25% of the levers of power of my SAITEK ST50 Joystick and ground speed and added violently. It has more aircraft here, and never noticed such a reaction. Reduced the maximum sensitivity and nothing. Everything remains the same.I hope to have collaborated while presciso some advice how to solve these problems appeared. I'll keep flying, and some observations I will report more later.See you soon. Thank you all