Constant Suttering and low perf for a high-end pc

User Support Hub Install, Performance & Graphics
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I have a 5 month old PC, pretty high end at least in my eyes that just isn’t performing nearly as well as it should be.

Specs:
Ryzen 9 7950X3D
ASUS TUF GAMING OC RTX4080
32GB DDR5 6000Mhz CL36 RAM
1000W Corsair PSU
x2 2TB Samsung EVO Plus M.2 SSD’s
MSI MAG X670E Tomahawk WIFI

Long story short (as short as I can put it) for as long as I’ve had this PC and MSFS installed I’ve had consistent stutters on the ground, I used both the Fenix and PMDG 737 series as I’m sure alot of others do, with however many addons, GSX, FSRealistic, Volanta etc, at 95% of airports I fly into with scenery say Inibuilds Heathrow or Pygrugee Edinburugh, I get consistent stuttering, not constant, just consistent, It’s quite prominent when changing views, say changing my view from my overhead panel on the 320, to the Captains position looking over the glareshield. Its not just that though, when I’m on final I tend to get quite big stutters, mostly at bigger more perf heavy airports, but Its not selective, I’ve had stutters flying into default scenery. I don’t get bad FPS, at Heathrow I can keep a steady 40fps with Frame Generation which In my eyes its pretty good, but its just the stutters that ruin that and make it almost unplayable for me. I’ve re-installed my windows, bought an entirely new CPU (7900X3D) re-seated my RAM, fiddled with my BIOS, Process Lasso you name it, reset my Shader Cache, maxed out my MSFS settings, lowered them, tweaked them, to no evail. I’ve run Memtest86 for 11 hours with no errors, prime95 for 2 hours you name it, i’ve tested more or less every component, no thermal throttling, nothing. Everything looks in check but i’m still getting these absolutely horrid stutters. I’ve got my Rolling cache off, i’ve deleted it about 16 times I don’t even have my LOD sliders on anything mind blowing, I think they’re both set at 200 and 110 respectively. My settings are a mix of High-Ultra with a few mediums on the things that don’t matter too much to me (Bushes and Trees). My off screen terrain cache is at Ultra, so are my clouds.

If anyone has any suggestions, please don’t be shy to just give me a suggestion, I’m open to anything. I know stuttering is something alot of people experience, but I’ve seen people with the exact same specs as me be it with slightly different RAM timings for example, get similar perf without any stutters. I built the PC myself (2nd time doing it) I’d consider myself reasonably knowledgeable on PC’s and atleast to my knowledge this isn’t a Hardware issue, unless its a mobo issue but I 1. hope that isn’t the case and 2. very much doubt it is, and I probably won’t know unless I try a new motherboard which is going to be a complete and utter headache in itself.

Like I said, any suggestions/recommendations/anything that might get rid of these stutters, is more than welcome. I just want a smoothish simming experience, like I’m sure alot of us crave. Thanks in advance. (if you want me to get a few screens of my settings and maybe a video of the issue I can, but I don’t currently have GeForce experience installed so i’ll have to use something else).

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forgot to add that i’ve updated my bios, chipset drivers, graphics drivers, more or less everything. even went into the SU15 beta as someone had mentioned switching views/stuttering had been solved on their system but that wasn’t the case for me.

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The default suggestion is to eliminate all addons - including any 3rd party airports. If you aren’t using Addon_Linker, then rename your Community folder and let the sim rebuild it empty.

Uninstall any addons like GSX, FSR, etc. Everything but the sim and the planes you are flying. Turn Traffic settings completely OFF.

Then test fly into one of the default airports that has a reputation for being hard on systems. Start 30 miles west of LaGuardia, head east and land there.

You need to have a baseline. Then you can start adding things back in until you find what it is that affects your flights most negatively.

2 Likes
4

IMO 20 true fps isn’t enough to “feed” frame generation. I’d suspect this is the root of the stutters in some of what you describe.

So you’re using this or 7800 now? Did you reinstall Windows?

If 7950, are you using GameBar to manage the core parking? DX11 or 12?

200 TLOD is still pretty high when you are already pushing on everything else and at a detailed airport. Try 100 (or less) for now and see if it helps at all. You are really pushing a lot through there from what you’re mentioning in terms of addons.

I noticed this is a drain. I mean it’s polling every second or so, and definitely creates stutters when piled on top of everything else. Try disabling it for now.

Sounds to me like there is a couple of things wrong in your config somewhere BUT also you’re trying to have too much running for it to cope. Something needs to give.

2 Likes
5

Are the stutters there when you look straight ahead? When looking down to the side, the terrain will stutter because the image going to one lens is slightly out of sync with the other lens. This is a limit of VR technology. A frame produced even a fraction of second later will be out of sync. Just like aliasing or ghosting, you just have to ignore it.

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i’m not using vr.

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i’m using the 7950X3D at the moment, I did re-install windows, without frame gen i’d get a good 25-30fps at heathrow, its just the smoothness rather than the actual boost in fps. i haven’t used the game bar no i’m not sure how to tweak it, i don’t have a large amount of addons running. at most times its just the sim, fenix, fs realistic, and below 10000ft gsx, with volanta ofcourse. and for the LOD’s i’ll lower it to 100 and leave the object level of detail at 115.

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good suggestion. i don’t even have frsealistic, gsx, or volanta installed on my PC at the minute and the issues still persistent so.

1 Like
9

looks like lowering the Terrain LOD to 100 has completely eliminated the issue, which is stupid because I lowered it to 50 before I reset windows and the issue was still very much there.

2 Likes
10

Well, good news I suppose. This sim is a complex web. The previous stutters could have been something else disguised as the “same” stutters, or a bad-server day, or anything else you care to mention lol

It might be back to rubbish again tomorrow even if you don’t change anything!

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What about fast startup? Hibernation? (turn off fast startup and hibernation)
1 How to Disable Fast Startup (howtogeek.com)
2 How to Disable Hibernation (howtogeek.com)

3 Power plan (ultimate performance)
How to Enable the Ultimate Performance Power Plan (howtogeek.com)

Clear the cache.

1 Start your PC in safe mode

  • Click start
    1start
  • Click power icon
    image
  • Press and hold left SHIFT key and click restart
    image
  • Select Troubleshoot > advanced options > startup settings > restart
  • Select 4 - Enable safe mode

2 Click start and type

%localappdata%\D3DSCache

Press Enter
Delete all folders

3 Click start and type

%APPDATA%\..\LocalLow\Nvidia\PerDriverVersion\DXCache

Press enter
Delete all files

4 Type

%localappdata%\Nvidia\GLCache

Press enter
Delete all folders

5 type

%appdata%\NVIDIA*ComputeCache*

Press enter
Delete all folders

6 type

%localappdata%\Packages\Microsoft.FlightSimulator_8wekyb3d8bbwe\LocalCache\SceneryIndexes

Delete all files

7 Click “start” and type storage settings - press enter
8 Click temporary files > scroll down > check box DirectX Shader Cache
9 scroll up > click Remove Files

10 Restart PC.

If installed uninstall geforce experience.

1 Like
12

With your system I would expect you to be able to have decent performance at more than 100 TLOD. Maybe it’s because you are siming in the Fenix perhaps though or you have high AI traffic or Road Vehicle settings. Just speculating here by the way.

What is your RAM speed clocked at in BIOS?

1 Like
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Its just a bit odd that putting my LOD down that low has solved it, arguably my pc should quite easily be able to run the sim at about 150/115 respectively. Do you have any other suggestions, you mentioned there being something wrong with my config, also the core parking? is that done automatically with game bar or do I need to enable something? and I’m on DX12.

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6000Mhz with the A-XMP config, I don’t have any traffic enabled currently, and before I re-installed window they were all set at about 5 anyways.

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i don’t have Geforce Experience installed at the moment, I installed my drivers through NVclean install to minimize clogging my pc up and also to see if Geforce was maybe a cause of the stutters, which it wasn’t.

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I mean, like i mentioned people with worse or similar specs to mine are running at 150+ LOD’s without stutters, not sure if it’s my system or if there’s an underlying issue. both of which are frustrating.

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Ah … full overclock then. That’s good then :+1:

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I saw a vid that asserted that the 7800x3d was a better choice for gaming than the 7950x3d because the 7950 used the efficiency cores instead of the performance cores in some games by default. Don’t recall if there was a workaround for it. Perhaps the Ryzen pros can elaborate.

19

I have a 2017 based PC (i5 7600k, 48gb RAM, 2070s GPU) and get around 37 fps on the ground at EGNM in the PMDG 737 600 and around 45-50ish fps in the air (PG disabled, TLOD 100, ai traffic/road vehicles at 5, mostly high settings, empty CF, use P2ATC, use AAO, sim at 1440p on 35 inch Ultra and 2 side 1440p screens). I don’t sim in the Fenix though.

You have a great PC system there and seeing as you are not reporting any PC shut down issues or high CPU/GPU temp issues I am kind of thinking (?) that your PC is okay but that maybe there is something else going on that we don’t know about e.g. config issues, backround progs taking up resources or some other such thing. My feeling is that it is probably resolveable but atm I am sorry but I am not sure what the solution is :slightly_smiling_face:

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You should be able to enforce core affinity for any process. ProcessLasso will do that for you on a per-executable basis on Intel or AMD. For example I force OBS to only use efficiency cores because otherwise it can affect my FPS when recording.