CTD when accessing dev mode using mutiple render windows

Sim Update 5 Beta | MSFS 2024 CTDs
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1

ISSUE DESCRIPTION

Description of the issue: startup ok if single screen only. Following enabling of second and third windows, still ok. Disabling any render window causes ctd, entering dev mode causes ctd. In main screen or in flight, same result.

If mutiple render windows are enabled in usercfg, ctd at startup.

EDIT: this bootup resolved itself after a 2nd installation of the SU5 beta, however. When accessing dev mode, ctd still occurs

Weather settings:

FREQUENCY OF ISSUE

Always 100% of the time.

REPRODUCTION STEPS

Please list clear steps you took in order to help our test team reproduce the same issue:

  1. Enable mutiple render windows

  2. Disable render windows.

  3. Observe ctd.

YOUR SETTINGS

Dev mode enabled to see fps graph only.

9809x3d/4090. Triple 4k screens

DLSS balanced, FSR3 Frame gen

2

I believe there is an issue with FSR3 Frame Generation in MSFS and either GSync or VRR - which manifests in a crash with multiple screens.

I suggest turning G-Sync and VRR off as a test. If you have NVIDIA Control Panel, when G-Sync is Off, Vertical Sync has a new option: Adaptive Half Refresh Rate. This is working for me…

  • TV at 120 Hz
  • NVCP Vertical Sync = Adaptive (Half Monitor Refresh Rate)
  • MSFS Max Frame Rate = 30
  • Vertical Sync = Half Monitor Refresh Rate
  • Frame Generation = FSR3 x2

… but it is still a bug, because without VRR, I have to lock frame rate and, It feels like Frame Generation is only working on main screen, panning on side screens is jittery as if it’s only 30 fps. Still not sure.

3

Your report contains 2 issues

  • Disabling any render window causes ctd
  • entering dev mode causes ctd

The issue related to the 2nd point has been reported here: CTD EVERYTIME when loading into dev mode

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