Incorrect fuel over FIX point

[RISCfuture]

ETP1 is 331 NM away and I have 12.8 klbs of fuel onboard, yet it thinks I will run out of fuel before I get there:

CALC FUEL was equal to SENSED FUEL.

Challenger v1.1, X-Plane 11.55

Edited January 23, 2022 by RISCfuture

[bumbak]

Check if Youre x-plane is running below 20 fps. If yes, You may look there: 

 

[RISCfuture]

Definitely not. It runs at 50-60 fps consistently. Plus, it's definitely an avionics issue: Estimated fuel consumption was calculated correctly for all points in my FMS flight plan, and actual fuel consumption was reasonable. Only estimated fuel over the FIX point was incorrect.