P3Dv4.3, ORBX FTX Global, Vector, Active Sky, FSlabs a320.

I am experiencing a stutter at regular intervals (every 2 seconds or so). I have tried pretty much everything to get rid of it... but i still have no luck. The stuttering is mostly noticeable when making sharp turns.

Any help would be greatly appreciated.

 

 

Edited March 24, 20197 yr by anshugiri

1 hour ago, anshugiri said:

P3Dv4.3, ORBX FTX Global, Vector, Active Sky, FSlabs a320.

I am experiencing a stutter at regular intervals (every 2 seconds or so). I have tried pretty much everything to get rid of it... but i still have no luck. The stuttering is mostly noticeable when making sharp turns.

Any help would be greatly appreciated.

 

 

A little more information would be helpful.  System specs, monitor refresh rate, and sim settings.  I suspect a vsync/refresh rate issue if you notice it most when turning.

1 hour ago, anshugiri said:

I am experiencing a stutter at regular intervals (every 2 seconds or so). I have tried pretty much everything to get rid of it... but i still have no luck. The stuttering is mostly noticeable when making sharp turns.

Any help would be greatly appreciated.

@anshugiri I have posted about a similar issue in the past few weeks. In my case the sim exhibited a regular slight single stutter every 3 seconds. It was barely noticeable but sufficient to destroy that sense of immersion we are all seeking.

This regular stutter was also visible in Slew mode while stationary on the ground and a slow 360 degree turn was started. I used to use this test to check for the presence of the stutter at the beginning of a session. Lately it hasn’t been necessary as this stutter appears to have resolved spontaneously! Fingers crossed.

I never found the cause, but did discover I could get banish it for the duration of a single simming session by simply rebooting. Restarting Prepar3D was not enough; the regular stutter would persist. A warm or, preferably, cold reboot provided the solution. Might be worth a try.

Regards,

Mike

Edited March 24, 20197 yr by Cruachan

7 minutes ago, mpw8679 said:

A little more information would be helpful.  System specs, monitor refresh rate, and sim settings.  I suspect a vsync/refresh rate issue if you notice it most when turning.

8600k at 5.0, RTX 2080, Samsung 850 EVO, 16GB Ram, monitor refresh 30 hz.

Sounds like anti-virus scanning could be the cause here. 

Add an exception to the FS folder, or disable AV when you are flying. 

OR

If you have FSUIPC, see if it is autosaving, disable if needed. 

 

Edited March 24, 20197 yr by Jude Bradley

If you have not done so, try enabling write caching on the drive(s) where Windows and P3D are installed.

Doug

1 hour ago, ddawson said:

If you have not done so, try enabling write caching on the drive(s) where Windows and P3D are installed.

Doug

In a related measure, I set my sim machines up to disable last access file stamping, so that a write doesn't occur every time a file is read.

From an administrator-elevated command window type: fsutil behavior set disablelastaccess 1

This works with Win 7 through Win 10, perhaps with others.

Regards

 

3 hours ago, Jude Bradley said:

Sounds like anti-virus scanning could be the cause here. 

Add an exception to the FS folder, or disable AV when you are flying. 

OR

If you have FSUIPC, see if it is autosaving, disable if needed. 

 

Tried all of your suggestions... but the problem still persists.

2 hours ago, ddawson said:

If you have not done so, try enabling write caching on the drive(s) where Windows and P3D are installed.

Doug

Write cache is enabled.

Delete the following file.....

• Local Disk (C:) > Users > You > AppData > Roaming > Lockheed Martin > Prepar3D v4 > Prepar3D.cfg

Delete all files in the following folders......

• Local Disk (C:) > Users > You > AppData > Local > Lockheed Martin > Prepar3D v4 > Shaders
• Local Disk (C:) > Program Data > Lockheed Martin > Prepar3D v4 > Scenery Indexes x64 >

These are all hidden files, so you will need to select "view hidden files and folders" from the relevant menu (reset this when you have finished). Please note that deleting the Prepar3D.cfg file will require you to input all of your P3D settings again (including controls).

This worked for me when I suffered a "stutter every three seconds" problem shortly after installing P3D v4 and all of my addons.

 

Edited March 24, 20197 yr by Christopher Low

20 hours ago, Christopher Low said:

Delete the following file.....

• Local Disk (C:) > Users > You > AppData > Roaming > Lockheed Martin > Prepar3D v4 > Prepar3D.cfg

Delete all files in the following folders......

• Local Disk (C:) > Users > You > AppData > Local > Lockheed Martin > Prepar3D v4 > Shaders
• Local Disk (C:) > Program Data > Lockheed Martin > Prepar3D v4 > Scenery Indexes x64 >

These are all hidden files, so you will need to select "view hidden files and folders" from the relevant menu (reset this when you have finished). Please note that deleting the Prepar3D.cfg file will require you to input all of your P3D settings again (including controls).

This worked for me when I suffered a "stutter every three seconds" problem shortly after installing P3D v4 and all of my addons.

 

Tried it, makes no difference.

22 hours ago, anshugiri said:

Tried all of your suggestions... but the problem still persists.

What specific directories and process have you exempted?

 

47 minutes ago, Luke said:

What specific directories and process have you exempted?

 

I uninstalled the antivirus, and disabled windows defender antivirus.

I'd be curious what process' CPU time spikes on an autosave. I'd set your interval to 2-3 seconds and then watch task manager to see what's spiking.

Cheers!

 

Turns out it was a monitor refresh rate issue. The pattern of micro-stutter changes as i change the refresh rate. Looks like i need a g-sync monitor.