Just recently I started getting the dreaded BSOD at random times using both P3Dv5.4 and its chief rival platform. A clean-up of my computer and a re-seating (with renewed thermal paste) of my nVidia Geforce GTX 2080 Ti appeared to solve that problem.

However, now the P3Dv5.4 frame rate drops to 0.4 fps from about halfway through loading. This is independent of aircraft chosen, from default and also either PMDG and FSLabs aircraft models. The rest of the loading takes place veeery sloooowly, with the Flight Computer Initialization running at about 18 to 22 seconds per subscreen second.

Flying the rival platform (2020 version) I do not get any fps problem and get around 65 fps.

I have tried doing "repairs" to both P3Dv5 Professional and also P3Dv5.d Client without success. I get the feeling that either I have a corrupt file somewhere within P3D (but why wasn't that corrected during the "repair" procedures?) or is there a setting somewhere within P3D that has somehow changed. As you can see, my thinking is rather simplistic at this stage and I would appreciate some good guidance.

Edited February 23, 20251 yr by roadrabbit149
Title added

What was the error message?

I am not getting any error message.

I'd start by clearing out the shaders and letting them recompile.

Reset shaders

Reset P3D config files

Run sfc /scannow from command window (Run as admin) … if you see errors, keep running sfc until it clears.

Firstly, since previous, I have uninstalled P3Dv5.4 and done a 'clean' re-install. No improvement or error messages.

Have reset shaders, also deleted Prepar3D.cfg file. Have also carried out 'sfc /scannow check' with no error messages generated.

What puzzles me is that MS2020 works fine and gives 65 fps. I really would like my P3D to work as I am very attached (!) to my PMDG fleet of B747-400, B777 and B787, not to mention other well-known airliners and light aircraft..

Edited February 24, 20251 yr by roadrabbit149
additional info.

Clean re-install as in removed P3D via add & remove programs then delete all five related folders from your drive?

Only other thing I can suggest is make sure you don’t have an nVidia profile setup for P3D, if you do delete it.

 

I use fsx /p3dv5 and msfs 2020 on the same pc all running smoothly at mostly ultra 60 fps . I use the nvidia studio reference drivers not the latest game versions. So I don't believe there is cross sim interference! 

For the record my install order was msfs - fsx - p3dv5. 

I also use a completely custom windows power plan setting using an app to unlock and save all the hidden options. I had to do that to get fsx smooth and stable in w11 but it also worked wonders for p3dv5. Looks and runs amazing. There are multiple cpu and gpu tweaks available in there. Windows really does like to slow your system down behind the scenes in so many ways. 

@roadrabbit149, what resolution is your monitor? What refresh rate is it set to?

Do you have VSync enabled in P3D and fps set to unlimited?

Please post the JOBSCHEDULER section of your Prepar3D.cfg.

Yes - that was how I did the 'clean re-install'.

I have looked in the nVidia App and I don't have a profile for Prepar3D. I did try and add P3D but I got message saying option was not available.

I have now also updated my nVidia Game Ready Driver to version 572.47

For more info I used the nVidia Game Overlay to check performance. Here are the results:

MS2020

FPS: 35/48   GPU: 72/80%   CPU: 25/26%   LAT: 53/72 ms

Prepar3D ver 5.4

FPS: N/A   GPU:  2%   CPU:   6%    LAT: N?A

Hi Ray,

Monitor resolution = 3840 x 2160 (native)

Refresh rate = 60 Hz

VSync = enabled

fps target = unlimited

Jobscheduler (from Prepar3D.cfg file) =

[JobScheduler]
AffinityMask=65535
P3DCoreAffinityMask=65535
MainThreadScheduler=0
RenderThreadScheduler=2
FrameWorkerThreadScheduler=4

When loading from scratch data entry window came up after 28 secs (fastest ever!) and Overlay shows:

FPS 35, GPU 1%, CPU 1%, LAT N/A.

Once data is entered and OK pressed, Overlay drops immediately to:

FPS N/A, GPU 5%, CPU 9%, LAT N/A.

As always, grateful for any assistance   😀

@roadrabbit149, that looks okay. Is P3D loading the sim directly or presenting the main menu from which you can choose aircraft, airport and time?

What is your default aircraft? If not the Piper Cub change to that, save the scenario as your default one and try again.

FPS = N/A??

Can you list the folders you deleted for clean re-install?

2 hours ago, roadrabbit149 said:

When loading from scratch data entry window came up after 28 secs (fastest ever!) and Overlay shows:

Once data is entered and OK pressed, Overlay drops immediately to:

What “data entry window”?  What data are you entering?  Sorry, but you completely lost me here … do you have any context around this?

12 minutes ago, CO2Neutral said:

FPS = N/A??

Can you list the folders you deleted for clean re-install?

What “data entry window”?  What data are you entering?  Sorry, but you completely lost me here … do you have any context around this?

I suspect he’s referring to the screen where you select aircraft, airport and date / time.

To clarify: yes, the sim is loading the sim from P3Dv5.4 screen icon, then after 28 seconds the Scenario screen appears asking for aircraft/airport/weather/ date and time. This is the window I referred to as the data entry screen.

The default aircraft (since I originally installed P3Dv5) has been an F35 at a US airbase in south central USA. I can change it, but I was always advised to leave the default aircraft to load up as given. Happy to take advice here.

Files deleted for a clean install were four: P3Dv5 Scenery, P3Dv5 Content, P3Dv5 Client and P3Dv5 Professional. There was no 5th file as previously described.

Regarding the N/A entries: these are what is displayed by the <nVidia In Game Overlay> when selected. When I select <Shift-Z> I get the actual readings of around 0.3 fps.

Edited February 24, 20251 yr by roadrabbit149