Simlink error causing P3D to freeze?

Hi Team,

I am experiencing an issue with my simulator where, at random phase of the flight the sim starts to freeze and un freeze every second or two.

While trying to narrow down the cause, I found a couple of errors with respect to Simlink. Need your help to determine if Simlink is causing the issue.

In the below log, the 0’s and 122’s synchronizes with sim freeze and unfreeze

Error from Simlink Log:
[2020-12-31 01:41:00] Status: 0; Last error: 183
[2020-12-31 01:41:01] Status: 0; Last error: 183
[2020-12-31 01:41:02] Status: 0; Last error: 183
[2020-12-31 01:41:03] Status: 0; Last error: 183
[2020-12-31 01:41:04] Status: 0; Last error: 183
[2020-12-31 01:41:05] Status: 0; Last error: 183
[2020-12-31 01:41:05] Status: 0; Last error: 183
[2020-12-31 01:41:07] Status: -6; Last error: 122
[2020-12-31 01:41:08] Status: -6; Last error: 122
[2020-12-31 01:41:09] Status: -6; Last error: 0
[2020-12-31 01:41:10] Status: -6; Last error: 0
[2020-12-31 01:41:11] Status: -6; Last error: 122
[2020-12-31 01:41:12] Status: -6; Last error: 122
[2020-12-31 01:41:13] Status: -6; Last error: 0
[2020-12-31 01:41:14] Status: -6; Last error: 122
[2020-12-31 01:41:15] Status: -6; Last error: 0
[2020-12-31 01:41:16] Status: -6; Last error: 0
[2020-12-31 01:41:17] Status: -6; Last error: 122
[2020-12-31 01:41:18] Status: -6; Last error: 0
[2020-12-31 01:41:19] Status: -6; Last error: 122
[2020-12-31 01:41:20] Status: -6; Last error: 122
[2020-12-31 01:41:21] Status: -6; Last error: 0
[2020-12-31 01:41:22] Status: -6; Last error: 122
[2020-12-31 01:41:23] Status: -6; Last error: 122
[2020-12-31 01:41:24] Status: -6; Last error: 0
[2020-12-31 01:41:25] Status: -6; Last error: 0
[2020-12-31 01:41:26] Status: -6; Last error: 122
[2020-12-31 01:41:27] Status: -6; Last error: 122
[2020-12-31 01:41:28] Status: -6; Last error: 0
[2020-12-31 01:41:29] Status: -6; Last error: 122
[2020-12-31 01:41:30] Status: -6; Last error: 122
[2020-12-31 01:41:31] Status: -6; Last error: 0
[2020-12-31 01:41:32] Status: -6; Last error: 122
[2020-12-31 01:41:33] Status: -6; Last error: 122
[2020-12-31 01:41:34] Status: -6; Last error: 0
[2020-12-31 01:41:35] Status: -6; Last error: 122
[2020-12-31 01:41:36] Status: -6; Last error: 122
[2020-12-31 01:41:37] Status: -6; Last error: 0
[2020-12-31 01:41:38] Status: -6; Last error: 122
[2020-12-31 01:41:39] Status: -6; Last error: 122
[2020-12-31 01:41:40] Status: -6; Last error: 0
[2020-12-31 01:41:41] Status: -6; Last error: 122
[2020-12-31 01:41:42] Status: -6; Last error: 122

At [2020-12-31 01:41:05] Below error was logged in Event Viewer (Time of issue occurrence in sim):

Faulting application name: NavigraphSimlink.exe, version: 1.1.18.916, time stamp: 0x5f5f62f8
Faulting module name: ntdll.dll, version: 10.0.19041.662, time stamp: 0x27bfa5f0
Exception code: 0xc0000374
Fault offset: 0x00000000000ff0f9
Faulting process id: 0xcac
Faulting application start time: 0x01d6deaa107e2d9a
Faulting application path: D:\Program Files\Navigraph\Simlink\NavigraphSimlink.exe
Faulting module path: C:\WINDOWS\SYSTEM32\ntdll.dll
Report Id: c1bd074d-d8d1-4e8f-96f1-10a8cbfe9ac3
Faulting package full name:
Faulting package-relative application ID:

Tests done:
-Reinstalled P3D v4.5 and tried having only 1 addon at a time and did some flights - Issue occurred
-Did Clean uninstall of v4.5 and fresh installed v5.1 and repeated 1 addon at a time - Issue occurred
-Updated GPU driver, Rolled back, updated - Issue occurred
-When the issue is happening, my PC performance status remained normal (~40 to 50% utilization)
Throughout these tests, the only thing remained common was Simlink client.

Observation:
-Issue started only in the recent time, after Simlink was updated to the type which ‘Runs when PC starts’ (Single client compatibility for all simulators / Version that was released after FS2020 launch)
-Issue occurrence is very random
-Just before submitting this topic, I have uninstalled Simlink to see if the issue occurs again. Will keep you posted.

I could not find any possible conflict/coincidence with other addons except this one. And the issue is so annoying.

Simulator: Prepar3D 4.5 and 5.1
Overall Sim Settings: Never exceeded ‘Medium’ for any parameter. I prefer performance over visuals.
PC Config:
Intel i7-9700
RTX2080Super
32 GB RAM

Please let me know if you need any other information.

I am not a native English speaker, hence please forgive any grammatical errors that I have made.

Thank you.

Regards,
Manoj Yadav

Hello Manoj! Welcome to the new forum.

The issue looks to be the result of a failed installation of the Simlink plugin into the simulator. Future versions of Simlink will be able to notify the user about this, but until then, some manual action is needed.

  1. Close the simulator if it is running
  2. Open the Simlink application (from the system tray) and navigate to the “Plugin status” tab
  3. Press “Plugin settings”
  4. Find the entries for your simulators and press “Uninstall Simlink” for each
  5. Press “Install Simlink” to reinstall the plugins.

Please advise should this not solve the issue.

Regards,
Malte

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Thank you @skysail, let me try that and update here on how it goes.

Appreciate your help !

Regards,
Manoj Yadav

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