PMDG 747 Cruise speed problem. FSX

[ConnorCarbutt 0]

Hi, Recently ive been flying in the PMDG 747, Everything works as it should except once I reach my cruise altitude (on the last ocation was 34000ft) with the autothrottle and autopilot set and engaged my speed began to decrease close to stall speed. To resolve this I had to disengage the autothrottle and manualy apply full power.

 

I havent been able to find a way of stopping this, im not sure if i have programed the FMC incorectly or if there is a bug withIthe aircraft.

 

I am still relatively new to the PMDG 747 as I fly the PMDG 737ngx far more so it is likely I have programed something incorectly but im not sure what.

 

Thank you

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Added Information: this problem doesnt seem to happen when using the speed hold button, only the Vnav

[scandinavian13 5,192]

 

 

I havent been able to find a way of stopping this, im not sure if i have programed the FMC incorectly or if there is a bug withIthe aircraft.

 

FSX turbulence, or improper wind simulation. What weather program are you using?

[ConnorCarbutt 0]

FSX turbulence, or improper wind simulation. What weather program are you using?

At the moment im still using the deafault untill i can afford something like active sky

[scandinavian13 5,192]

At the moment im still using the deafault untill i can afford something like active sky

 

Make sure to tick the "disable turbulence effects on aircraft" box.

[ConnorCarbutt 0]

Ill give that a try now   thanks