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Confused.com about fps

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    Confused.com about fps

    Can someone offer some thoughts or explanation to something that has been plaguing me for a while. I used to fly once in the early evening and then again later on, late evening/early morning. The early flight always goes without a hitch, with regards to fps. On completing the flight I shut down P3D and Voice Pilot, but leave AS Sim Brief and Navigraph running. I configure the new FP in Simbrief, AS and Navigraph and then restart P3D letting it run through to the initial F35 start-up screen. I wait for the new airport and PMDG selection (usually NGXu) weather etc to initialise and and load then at this point I hit trouble.
    My fps is limited to 30fps and normally runs with no trouble, unless I try to fly a second flight. My internal cockpit views drop to 4 - 6fps and external views plummet to 2fps it's nigh on impossible to use. My initial thoughts were that something had started running in the background and were swamping my CPU and graphics (Windows updates, PC backups ........??? but I couldn't see any hits or explanations on task manager or resource monitor and having stopped updates and backups I was still getting 2fps.
    Tonight, after yet another fps hit I switched through various airports, both 3rd party add-ons and P3D defaults, but still was getting the frame hit with the NGXu selected. On a barren airfield (EGYP) it was still the same and after switching to the 744 the external views fell to 0.4fps! I still didn't think PMDG was the problem but stayed at EGYP then switched aircraft to the F35, a UAV and a Carenado Commander and the fps jumped back up to 30fps. In disbelief I reselected to NGXu and the fps stayed at 30fps, switching to a 3rd party scenery airport also had no effect, the fps stayed at 30. I'm confused, why after shutting down P3D and exiting the program completely and then restarting it the correct way (->F35 ->NGXu) am I getting a fps disaster yet by reselecting P3D default aircraft whilst the P3D is running do I get the fps back again?

    PS, I always run everything with Admin rights.
    Last edited by Chigley; 20Oct2021, 01:09. Reason: Add a PS
    Ian Chalmers
    PC: i9-10850K CPU @ 3.60GHz, 16GB DDR4, 10GB RTX3080, 1TB SSD & 2TB HDD, WIN 11,WIN10 HOME, P3DV5

    #2
    Things became even weirder. After getting my fps back to normal (30fps) I continued, without shutting down P3D or anything as I discovered after the switching from NGXu to P3D default and back to the NGXu, at KLGA with the NGXu doing a prestart and program for a flight. Switching to external view for the push back and then to cockpit view the fps dropped to 6 again. Continuing the taxi and take off at NGXu I selected the Legs menu on the FMC and promptly suffered a CTD. During the prestart and programming I had made numerous FMC selections with no problem yet had a completely unexpected CTD after a simple Legs page selection.

    Any ideas?
    Ian Chalmers
    PC: i9-10850K CPU @ 3.60GHz, 16GB DDR4, 10GB RTX3080, 1TB SSD & 2TB HDD, WIN 11,WIN10 HOME, P3DV5

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      #3
      Ian,

      The second post can‘t really be answered as you experimented with something that won‘t work, loading complex addons over each other keeps variables in the background and they‘ll not work with each other. Don‘t expect anything doing that.

      But generally your problem sounds like P3D hasn‘t been closed completely. This happens fairly often unfortunately. When you close P3D for your second flight it often remains an active process in the background. Go to the task manager and scroll down to P, chexk if P3d really closes. I personally run Chaseplane and LINDA and I know P3D is still running if these programs are still on my task bar. If they disappear and close the sim itself has closed too.
      i7-6700k, GTX 1080TI, 32GB DDR4 RAM @2666MHz, 4k
      Marc Ehnle

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        #4
        Thanks Marc I'll check Task Manager and close everything down in between flights. I didn't realise P3D could still be running in the background.
        Ian Chalmers
        PC: i9-10850K CPU @ 3.60GHz, 16GB DDR4, 10GB RTX3080, 1TB SSD & 2TB HDD, WIN 11,WIN10 HOME, P3DV5

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          #5
          Originally posted by Chigley View Post
          Thanks Marc I'll check Task Manager and close everything down in between flights. I didn't realise P3D could still be running in the background.
          I've found that it's not a P3D problem; rather, the culprit is the Navigraph simlink not being shut down when P3D closes. Then starting a new P3D session the simlink keeps the frame rates down to single digits. I reported this to Navigraph and they said they fixed it but it's not. I use Process Explorer instead of the task manager, but either way look at the executables running after you shut down P3D (it takes up to two minutes) and you'll see a Navigraphsimlink.exe still running. Kill it before you start a new P3D session.
          Dan Downs KCRP
          i7-10700K 32GB 3600MHz 2080Ti

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            #6
            Cheers Dan, once again the sage comes to the rescue.
            Ian Chalmers
            PC: i9-10850K CPU @ 3.60GHz, 16GB DDR4, 10GB RTX3080, 1TB SSD & 2TB HDD, WIN 11,WIN10 HOME, P3DV5

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              #7
              I don't understand this! I shut everything down then checked Tasked Manager (TM) and Process Explorer (PE) and nothing with any connection to P3D, AS, Navigraph, Simlink, Simbrief, VPilot or anything sim connected was running. I left TM and PE running then restarted P3D at the same location where I finished the last flight without starting any of the ancillaries and it was running at nominal fps, as soon as I switched to an external view the fps plummeted to 2fps again. Looking at TM and PE the only thing running at a high resource level was Windows Audio so I stopped that task and the fps reverted to the nominal levels again.
              How can Windows Audio interfere so dramatically with P3D?
              Once I had the sim running properly again with all the ancillaries I restarted Windows Audio and although the fps was much more sensitive to noise, screen changes and inputs the program ran smoothly.
              What the heck has Windows Audio got to do with anything or is this another red herring?
              Ian Chalmers
              PC: i9-10850K CPU @ 3.60GHz, 16GB DDR4, 10GB RTX3080, 1TB SSD & 2TB HDD, WIN 11,WIN10 HOME, P3DV5

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