1 hour ago, Souris Lemur635 said:

I do, and in those video I was running 300 TLOD.

I used DDU to uninstall the Nvidia drivers, then reinstalled. Didn't help at all.

For what it's worth, when I get the stutters while panning, the developer mode FPS box shows a massive spike in both GPU and CPU, but when it's not stuttering, it shows the CPU struggling, the GPU with a lot of headroom and says "limited by main thread".

So you run FXAA (Full Screen Anti-Aliasing)?  FXAA uses a TON of resources.  Even on my rig I do not run that, for that reason.  I'm running TAA with a TLOD of 200.

I would like to see your MSFS settings as Sethos indicates...

Also, I'd turn off your EXPO profile, and empty the community folder for now.  You need to establish a baseline without EXPO and without any add-ons.  This will (probably) rule out the EXPO profile as a problem, and (for sure) rule out any add-on as the problem.

Set TLOD less then 300... and try again.  (Try max 230-250)

56 minutes ago, Mace said:

So you run FXAA (Full Screen Anti-Aliasing)?  FXAA uses a TON of resources.  Even on my rig I do not run that, for that reason.  I'm running TAA with a TLOD of 200.

I would like to see your MSFS settings as Sethos indicates...

Also, I'd turn off your EXPO profile, and empty the community folder for now.  You need to establish a baseline without EXPO and without any add-ons.  This will (probably) rule out the EXPO profile as a problem, and (for sure) rule out any add-on as the problem.

Oh sorry, I misread! I'm only using TAA. I've tried EXPO off and there doesn't seem to be any difference, plus the stutters and low FPS are still there, so it doesn't seem to be related to that. The community folder is empty, I only installed the KLAX scenery to compare directly to that YouTube video. Here are my settings:

1 hour ago, rutrA said:

Set TLOD less then 300... and try again.  (Try max 230-250)

I've tried down to the default 200 and it's the same, the base FPS go up a bit, but it's not smooth. Also, from what I've seen, shouldn't 300/400 still give good performance with a 7800X3D? 

41 minutes ago, Souris Lemur635 said:

I've tried down to the default 200 and it's the same, the base FPS go up a bit, but it's not smooth. Also, from what I've seen, shouldn't 300/400 still give good performance with a 7800X3D? 

I don't run my 7800X3D that high, but I'm pretty conservative. I'm running 200 currently, and I will only increase it once I'm sure I won't get a stutter going higher.

Are the aux power cables hooked up to the video card?  I know dumb question, but I have to ask.

Also, what is that resolution?  5120 x 1440?  Is that your monitor's native resolution?

I've been experiencing a similar issue with a very similar PC - 7800X3D, RTX 4080, 32GB of CL30 6000MHz RAM, running off an NVMe SSD. I do run at 1440p though, non-ultrawide, so a bit of a lower resolution.

I do find that going down to TLOD 200 can make the experience passable in certain areas, but it will still struggle in areas with lots of payware scenery.

I'm curious, are you hitting VRAM limitations during the stutters when you check in developer mode? My 4080 definitely hits them sometimes, but you've got another 8GB of VRAM so you might be in the clear there.

1 hour ago, Mace said:

I don't run my 7800X3D that high, but I'm pretty conservative. I'm running 200 currently, and I will only increase it once I'm sure I won't get a stutter going higher.

Are the aux power cables hooked up to the video card?  I know dumb question, but I have to ask.

Also, what is that resolution?  5120 x 1440?  Is that your monitor's native resolution?

Yep, everything is connected well. And yes, that's the native resolution, it's an Odyssey G9 monitor. I tried another monitor tho, and lower resolutions, but nothing changed. If anything, the CPU graph got even more pegged.

The annoying thing is, I had this exact issue after I build my current PC a few months ago but I can't remember what I did to solve it 🙃

Did you install the latest AMD chipset drivers from AMD's own website, not the motherboard manufacturer, as they can sometimes be (very) outdated. They contain, among other things, 3D V-Cache Performance Optimizers.

Also, could you try setting 'Off Screen Terrain Pre-Caching' to Low, applying, going back into the sim and testing, then set it back to Ultra.

Edited June 15, 20233 yr by Sethos

10 hours ago, Sethos said:

The annoying thing is, I had this exact issue after I build my current PC a few months ago but I can't remember what I did to solve it 🙃

Did you install the latest AMD chipset drivers from AMD's own website, not the motherboard manufacturer, as they can sometimes be (very) outdated. They contain, among other things, 3D V-Cache Performance Optimizers.

Also, could you try setting 'Off Screen Terrain Pre-Caching' to Low, applying, going back into the sim and testing, then set it back to Ultra.

Yes, I've installed everything from the AMD site. Tried the pre-caching setting but it didn't make any difference.

18 hours ago, rutrA said:

Set TLOD less then 300... and try again.  (Try max 230-250)

https://streamable.com/fjexie

This is with 250 TLOD, I think Streameable compresses the video a lot but you can still see the spikes in the FPS display, the stutters and the artifacting cause of frame generation. Looking at this it just feels like a waste having made this upgrade, if anything it's even worse than when I had a 10900k 😕

44 minutes ago, Souris Lemur635 said:

https://streamable.com/fjexie

This is with 250 TLOD, I think Streameable compresses the video a lot but you can still see the spikes in the FPS display, the stutters and the artifacting cause of frame generation. Looking at this it just feels like a waste having made this upgrade, if anything it's even worse than when I had a 10900k 😕

It's obvious you have something going but it's definitely not because of the hardware's lack of capabilities, it's something else. I have the same system and it's running pretty smooth with frame generation capped at 90 (thus it only shows 45FPS, real FPS next to it)

https://streamable.com/teno2l

Hopefully this helps (and others too maybe - Will add to this soon....)

You need to find out if its GPU or CPU related, or both, or if its Windows.

 

Windows:

 

1) Ensure Windows is up-to-date.

2) Install latest Visual C++ (https://github.com/abbodi1406/vcredist)

3) Open NVidia control panel are reset/restore all default settings

4) Open CMD (Run as Administrator) and run this command (copy all at once). I like to run it, restart the PC and run it again and restart.

sfc /scannow

DISM /Online /Cleanup Image /CheckHealth

DISM /Online /Cleanup-Image /ScanHealth

DISM /Online /Cleanup-Image /RestoreHealth

sfc /scannow

5) Open Disk Clean-up (Run as Administrator), tick everything and clean it up

6) Update drivers. I'd recommend using Snappy Driver Installer (https://sdi-tool.org). I tend to not use Realtek Audio unless you absolutely need it as it did cause me CTD's.

7) Open Task Manager and ensure it displays your 32GB RAM and it also shows your full CPU Core count.

8 ) If you have MSI Afterburner or RivaStatistics installed, uninstall them

9) Ensure you have the latest Nvidia 536.23 Driver

 

MSFS: https://flightsimulator.zendesk.com/hc/en-us/articles/4408886545938-How-to-restore-the-sim-to-its-vanilla-state-to-get-back-in-game

Try the following settings in the sim.... V-sync off, Reflex Off, DX11, TAA 100%, AMD sharpening 100 (Do not cap any frame rates)

Turn Online / Multiplayer / Photogrammetry / Bing World Maps all off

 

Test CPU:

1) Lower Resolution to 720p, turn all settings to Low, but keep Object LOD and Terrain Ltd at max

 

Test GPU:

 

1) Set Max display resolution, ultra settings, but keep Object LOD and Terrain Ltd at minimum

 

Other:

 

1) Check graphics card using HWiNFO to ensure the GPU is pulling is maximum power under any particular circumstance you can stress test it

 

Edited June 15, 20233 yr by Brocky120

1 hour ago, Souris Lemur635 said:

https://streamable.com/fjexie

This is with 250 TLOD, I think Streameable compresses the video a lot but you can still see the spikes in the FPS display, the stutters and the artifacting cause of frame generation. Looking at this it just feels like a waste having made this upgrade, if anything it's even worse than when I had a 10900k 😕

Something is not running properly, because my 7800X3D + 4090 is delivering wonderful performance.

Have you run MemTest86 on the sticks?

Also, I'd use a tool like ProcMon during a sim session to help figure out what is eating at performance.

Since your Cinebench test was normal compared to other 7800X3D's, then I would think it is not the problem -- I would look at the video card or vid subsystem.  Have you run a benchmark for the gpu?

9 hours ago, Mace said:

Something is not running properly, because my 7800X3D + 4090 is delivering wonderful performance.

Have you run MemTest86 on the sticks?

Also, I'd use a tool like ProcMon during a sim session to help figure out what is eating at performance.

Since your Cinebench test was normal compared to other 7800X3D's, then I would think it is not the problem -- I would look at the video card or vid subsystem.  Have you run a benchmark for the gpu?

Just ran Time Spy and it seems to be even above average.

I ran one pass of MemTest and it gave no errors, may have to leave it overnight to confirm but seems good so far.

What should I be looking for with ProcMon? I've never used it before.

On 6/15/2023 at 7:05 PM, Brocky120 said:

Hopefully this helps (and others too maybe - Will add to this soon....)

You need to find out if its GPU or CPU related, or both, or if its Windows.

 

Windows:

 

1) Ensure Windows is up-to-date.

2) Install latest Visual C++ (https://github.com/abbodi1406/vcredist)

3) Open NVidia control panel are reset/restore all default settings

4) Open CMD (Run as Administrator) and run this command (copy all at once). I like to run it, restart the PC and run it again and restart.

sfc /scannow

DISM /Online /Cleanup Image /CheckHealth

DISM /Online /Cleanup-Image /ScanHealth

DISM /Online /Cleanup-Image /RestoreHealth

sfc /scannow

5) Open Disk Clean-up (Run as Administrator), tick everything and clean it up

6) Update drivers. I'd recommend using Snappy Driver Installer (https://sdi-tool.org). I tend to not use Realtek Audio unless you absolutely need it as it did cause me CTD's.

7) Open Task Manager and ensure it displays your 32GB RAM and it also shows your full CPU Core count.

8 ) If you have MSI Afterburner or RivaStatistics installed, uninstall them

9) Ensure you have the latest Nvidia 536.23 Driver

 

MSFS: https://flightsimulator.zendesk.com/hc/en-us/articles/4408886545938-How-to-restore-the-sim-to-its-vanilla-state-to-get-back-in-game

Try the following settings in the sim.... V-sync off, Reflex Off, DX11, TAA 100%, AMD sharpening 100 (Do not cap any frame rates)

Turn Online / Multiplayer / Photogrammetry / Bing World Maps all off

 

Test CPU:

1) Lower Resolution to 720p, turn all settings to Low, but keep Object LOD and Terrain Ltd at max

 

Test GPU:

 

1) Set Max display resolution, ultra settings, but keep Object LOD and Terrain Ltd at minimum

 

Other:

 

1) Check graphics card using HWiNFO to ensure the GPU is pulling is maximum power under any particular circumstance you can stress test it

 

I tried all of this so here are some videos to show it.

https://streamable.com/7lvrwq

This is using the settings recommended there (DX11, V-Sync off, offline, etc). That video is with 400 LOD, the performance is ridiculously bad with low FPS and stutters everywhere, 200 LOD makes it a bit better but still below 40 FPS and stuttery.

https://streamable.com/9b6tqc

https://streamable.com/rvilxx

This is 720p with all settings set to the minimum except LOD, set to 400 and 200 respectively. Once again, terrible performance, even worse than normal.

https://streamable.com/mu66wc

https://streamable.com/2lqm4h

This is 1440p with 200 rendering scaling but minimum LOD. Everything is perfectly smooth, with constant 60 FPS and no stutters at all. Also checked HWiNFO and the GPU is working fine.

After testing, I found out the object LOD doesn't affect the stuttering or FPS at all, it's all in the TLOD. Anything more than 50 brings back the stutters.

 

So I guess it's all CPU related? Why could it be that it performs well in benchmarks but so terribly in MSFS? I'm really not sure what to do here 😕