Carenado, incorrect Performance Specs & AI‑Traffic Flag Causing Major Issues in MSFS 2020

User Support Hub Aircraft & Systems
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Hello Carenado Support Team,

I’m reporting two significant issues affecting both the PC‑24 and B390 Premier IA in Microsoft Flight Simulator 2020. These problems impact aircraft performance, realism, and overall simulator stability.

  1. Incorrect or Incomplete Performance Specifications

Both aircraft exhibit performance behavior that does not match published real‑world data. Examples include:

  • Fuel burn significantly higher than real‑world values

  • Climb performance below expected charts

  • Cruise speeds and drag characteristics not matching POH data

  • Weight & balance values that differ from manufacturer specifications

A small update to the flight_model.cfg, engines.cfg, and weight/balance tables would resolve this.

  1. Aircraft Incorrectly Flagged as AI‑Traffic Eligible

This causes MSFS to treat them as AI‑spawnable aircraft, which leads to:

  • FPS drops and stutters when AI traffic is active

  • AI attempting to load complex WASM systems not designed for AI use

  • Incorrect LOD behavior

  • Visual glitches (lights, gear, animations) when used by AI

  • Excessive CPU load in busy airspace

Because these aircraft are encrypted, users cannot correct these issues through Community‑folder overrides.

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The B390 is a 3rd party aircraft so you should report those issues directly to Carenado.
The PC-24 is a 1st party aircraft, you should search in the Bug Reporting Hub if those issues may already have been reported. If not feel free to create reports (1 bug per topic) using the provided template and filling in all required fields.
Open reports for the PC-24 (FS2020/24):
https://forums.flightsimulator.com/search?q=%23bugs%3Aaircraft-systems-bug%20tags%3Apilatus-pc-24%20status%3Aopen

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I forgot to add one can’t shut down the engines normally in the B390 because doing so deploys the reverse thrusters. Here’s the catch, the B390 has no reverse thrust capable engines in the real world. Unbelievable glaring oversight here…

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Hey buddy! I’m having the same problem! Did you manage to fix it? The fuel consumption is terrible! I have to refuel mid-flight like a fighter jet. It doesn’t feel like a simulator at all! If you’ve found a solution, please let me know. Thanks in advance!
And thanks for bringing this up

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Please note this subforum User Support Hub - is a PEER to PEER (i.e., user to user or player to player) self service help section.

As stated earlier, Carenado is not obligated nor has made any indication they are monitoring this or any other threads in the Forum for their own products - such as the B390. Please, for your own benefit, contact their Help Desk directly so your concerns can be received by the correct parties.