Citation Longitude weak power, stalling inflight

The selected altitude was 41000ft. Bellow FL100 was 250kt, but I was more than that. Whithin 10 miles from the airport was 230kt also.

VNAV was selected, A/T was on. The managed speed was mach 8.40, but the aicraft was about at 160kt of IAS, with the trottle on the max of the green arc and getting tail wind.

After I “reseted” the throttle, disengaging, moving to iddle, than moving to TOGA, the aicraft got slowly to mach .840.

Flaps, gear and spoilers was retracted.

Talked to the guys from Working Title Simulations, they said that was probably because I had the old G3000 mod on my Comunnity folder. Now it comes default. I will test asap if the issue occurs with this new modification.