Hi everyone,

even after SU9 I still can't get over this lag spikes. As you can see in the video my sim runs perfectly fine at 30 fps but I experience those spikes where my fps suddenly drop to 13/15, sometimes twice in a row.

I tried everything (except reinstalling the game which will be next) but nothing solved it.
For context, I have the FPS locked at 30 with game vsync on and the screen rate locked at 60Hz by Nvidia control panel. I have this problem regardless of the graphic settings (even with everything at minimum). Nvidia drivers are updated. Community folder is empty expect for Navigraph. 

Hardware:
GTX 1080
i7 9700k not overclocked. CPU usage stays ad around 30% with the sim running
 

 

Nasty, what resolution? 

This is similar to what I'm seeing, but my spikes downward aren't as bad.

Try it with only the game v sync. and turn of Nvdia sync

 

Is Gsync or Freesync enabled in your driver settings (if your Monitor supports it)?

Try disabling it and try setting everything to default in your driver settings, only using Max FPS and Vsync of the game.

I had this on my PC with mamudesign Powerlines, Lifts, Solarplants installed. After removing it, all was back to normal. Definitely something CPU related. Have a look at your community folder and your LOD settings. 

Good luck 

Mick

Do you have 3rd party mesh installed? That's a typical issue since SU7.

Edited April 30, 20224 yr by Nemo

2 hours ago, Alfrez said:

Community folder is empty expect for Navigraph. 

He’s all ready stated this. 

Run something like 3DMark and see if your system results consistent with the results of other users with the same hardware.

Just a guess but try changing your refresh rate in NCP to 29hz and see if it persists.

Personally, I would use Process Monitor and try to find out what's hammering your CPU.  Antivirus? What's running in the  background in Windows?  Hope you get it sorted soon.

Just to be sure i would still remove it for a test.

12 hours ago, Ianrivaldosmith said:

He’s all ready stated this. 

Sorry, for some reason om unable to edit my posts?

I wanted to say: Maybe try disabling the NaviGraph addon also just to test. I have heard before some people have FPS drops with it activated.

15 hours ago, Ianrivaldosmith said:

Nasty, what resolution? 

2560x1440

15 hours ago, Bobsk8 said:Try it with only the game v sync. and turn of Nvdia sync

 

Alredy this way 

15 hours ago, wiggum said:

Is Gsync or Freesync enabled in your driver settings (if your Monitor supports it)?

Try disabling it and try setting everything to default in your driver settings, only using Max FPS and Vsync of the game.

Tried this aswell 

As I said nothing else is installed, I tried even without navigraph this morning and nothing changed. I’m gonna take a drastic step and reset the pc (been a years since last time) and reinstall the sim.
I’ll let you know, thanks for the help anyway guys 😊

Hmm.. before you reset Windows and reinstall MSFS -  based on my experience of performance issues with MSFS - stuttering etc, I wonder whether this may be Windows related, or hardware issues? From the performance you showed in the video there's no reason to assume your system (or CPU) should be struggling with MSFS.

Here's some of the things I tried and I believe these really helped me get a better experience from MSFS. Your mileage may vary of course depending on what's actually wrong.

• Disable all unrelated background Windows tasks
• Right click on your MSFS flightsimulator.exe file and go to Compatibility tab - check disable full screen optimisations. Then click on  'Change high DPUI settings and check 'override high DPI scaling behaviour'.
• Clean your system: run CHKDSK/f and defrag your C and MSFS drive (if different) regularly. Optimise your system weekly or so. (I use Advanced System Optimizer)
• Try running scf/scannow (in a DOS window run as Admin) Also use the DISM command to clean Windows.
• Run Windows Memory Diagnostics
• There's are some registry tweaks that I found on these forums, if you are happy to tweak your registry and at your own risk: 
  • HKEY_LOCALMACHINE/SYSTEM/CurrentControlSet/Services/HDU/'Start' key-   Change value from 2 to 4
  • HKEY_LOCALMACHINE/SYSTEM/CurrentControlSet/Control/Session Manager/MemoryManagement/  Change 'ClearPageFileAtShutdown' key to 1
• In Windows, Settings - System - Display - Graphics Settings: Try changing Hardware Accelerated GPU Scheduling (HAGS) to either on or off depending on where it is now.
• Set your system page file on your MSFS drive to be the same size as you RAM

For full information - link: https://flightsimulator.zendesk.com/hc/en-us/articles/360016142680-All-versions-How-to-improve-the-performance

Hope some of this helps.

 

Ray

I experienced the same problem when I flew over Germany lately, (Hamburg area) but only in that area, not in Scandinavia where I fly more frequently.