It could different things depending on where you were 30 mins later. On the air? near the ground? at a specific airport? I read there is a bug regarding degrading performance over time in long flights.
Literally at the same gate. I let it sit for sometime because I noticed it before and wanted to check.
Hopefully fixed next update but hey not the end of world!
Im wondering if its content.xml load order? going to have a play @f14billy The developer in me is curious as well 
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That is strange. You definitely want to make sure your CPU is not overheating over time and throttling to keep it cool after 30 mins or so. If the temps are in check then it could be a bug.
Good to know!
How can I check CPU temps and what should they be at?
There are many tools you can find online to monitor CPU temperatures and other things.
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Thanks do you have an estimated figure what CPU temp should be?
I sent you a private message since it is not related to this thread.
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is there any cure for stuttering when turning on the ground? (taxiiing)
Not that I know of, even with the workaround I still see stuttering when turning my head or turning the aircraft fast on the ground. Setting Offscreen terrain pre-caching to ultra helps though.
Thanks. Was about to start troubleshooting and glad i checked here first. Timer was up on W10 update and had to update then FSUā¦ performance down considerableā¦ will start with AU uninstall.
You only need to delete the 3D photogrammetry cities not the whole WUs to test. And remember to restart the sim after deleting. Let us know how it goes for you.
The Aus Pg had no effect. However I did find that there were some WU updates on previous WU installs in content manager. I proceeded to update 1x1. WU2 update (the update to the already installed WU2) caused additional 12-15% more loss for me.
So dove into NVCP, set to max frames vs. 60 cap I had set ( to stop the power bug in menu (what Iām gonna call it). same and power bug still there.
Then saw FXAA was setā¦ so um, set to global because I have TAA in MSFS set, that solved it for me (donāt ask why it was set this wayā¦ only assume I set it previously that helped some past issue in MSFS, so likely not applicable to you?).
Went from 18-22 frames setting on tarmac at Love Field to 48-54 (BTW, have Dallas PG installed and locally cachedā¦ didnāt mess with thatā¦ was next on list, glad I didnāt have too!). Also not on 511 as too many issues for me (not stuff specific to MSFS). On last 497.
So check NVCP for anything that possibly conflicts with MSFS settings (that shouldnāt ideally but may).
I donāt think there will be ā1ā solution as many things can/do impact the app and it having to handle a ton of data plus network loading/server connected to/etc).
My system is not standard hardware or software (letās call them tweaks). And this is only the simplest of tests I made so far in 1 locationā¦ gonna go check out the AUS PGā¦ always like flying there as it was pretty darn good without PG.
So my best guess is I caused the problem that was exacerbated by the recent update (which one, WU7, Aus PG, Win10ā¦)ā¦ and not gonna spent time finding which hole the rabbit is in.
Keep on keeping on!
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So it looks like the issue with PG affecting the FPS / Frametime is not something we can influence with scenery load order etc.
All that is installed for a PG region (3d city) is a single text file in a folder called āCoverageMapsā. The text file is called tin.txt and contains the name of the WU. It seems this is a simple flag that enables PG in that area.
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Some more somewhat anecdotal evidence. this may be only affected if you spawn into an area with PG.
here are some frametimes from phoenix and Liverpool in the uk (which has no PG nearby)
Mainthread frametimes.
phnx
PG cities installed 20ms
PG cities uninstalled 14ms
eggp
PG cities installed 14ms
PG cities uninstalled 14ms
EDITā
The plot thickens, just tested with LEMD which does have PG and the frametimes are the same with both PG cities installed and uninstalled. 14ms
Edit No2
This only seems to affect the US. I tried again at KLGA and removing the 3d cities gives me back 5ms however YSSY doesnt improve performance by removing the 3d cities
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Definitely seems like your issue is very different. The 3D photogrammetry cities issue is very specific. You have to be main thread limited on the ground with photogrammetry on bringing your FPS to about half of what it would be if you had photogrammetry off.
The other identified issue is the one that started this thread. Your FPS goes to single digits on the ground with photogrammetry on and seems like the only fix for that one so far is to do a full reinstall of windows unfortunately.
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Great findings!
I tested before only in the US. With all PG areas enabled, i have in the US on the ground near PG areas -50% FPS on my system. The performence i so bad, that the sound begins to stutter during the loading screen.
So now i tested other regions.
With all PG enabled i had no performance degredation in: ESSB Stockholm, EFHF Helsinki, LSZH Zurich, EGLC London, YSSY Sydney
But EKCH Copenhagen gave me again -50% FPS with PG on. I had one CTD there, when i enabled PG.
@Hester40MT i hope the devs will find something with this
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Yes, that seems to be the issue on PG (sometimes), reinstall os. The thing is there are so many reasons an issue will/can happen with this newish tech, complexity and size. And re-installing Win fresh seems to resolve but Iām sure you know as well as I thereās likely other ways to fix it (Win) without re-install. I may do that on one of my test benches soley to satisfy my curiosity, but itās a hobby flying and Iāve been down those rabbit holes before ; ) Works good for me the way Iām currently using msfs ā¦ which will change as it always does.
My main intention was to bring some more thought on this and specifically the nvcp adjustment that resolved my issue. Likely could fix others issues with this too as I doubt thatās the only conflict the driver/app can haveā¦ but not everyoneās due toā¦ not all the same exactly.
Doin great f14billy, keep getting and disseminating info, helps many.
Edit: Just did a flight KJWY to KAFW no issues and good flight with max and live weather (no traffic) to check storm out. Noticed small MSFS patch/update since yesterday too on loading.
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Unfortunately I cant replicate this at EKCH :S which makes this particular bug even stranger!
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Just retested:
EKCH is a strange one.
I get the bug 100% on gates A-34 and A-30 (Closest to the city)
On gate B-3 i get the bug half, that means i have 30FPS instead of 20FPS when the bug is otherwise present.
On gate G 15 and Ramp-57 i could not see a difference (but V-Sync was on, so 38FPS was max FPS)
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