32 minutes ago, Seth2021 said:

Do you have Riva tuner frame limit enabled? its not working with Frame generation + creates stutters & tearing. 

Also open MSFS frame counter ( developer mode ) and check if you have any spikes on CPU or GPU. If its on GPU then 100% there is conflict with 3rd party frame limiter. 

We have the same Asus 4090, and i had the same stutters on Alienware AW3423DW G-sync monitor 

 

Nope don’t use rivatuner. I won’t be home for a bit but I have some suggestions to test out tonight. I’ll report back. 

 

Something else I should mention.  I had good performance before except in the heavier scenarios that I couldn't maintain 60FPS.  Obviously I'd get stutters there but that was usually reserved for the heavier performing planes like FBW in the big metro areas.  Rarely had a problem anywhere with PMDG since performance is much better on my system.  But, when capping frames and using gsync I sometimes would struggle to maintain the FPS whereas when I disabled vsync and frame capping I would sometimes get double the FPS in the same scenario.  That's what I got the gsync monitor for in hopes of being able to run without capping.

Edited July 19, 20232 yr by sfgiants13

To properly use G-SYNC in Microsoft Flight Simulator 2020 (MSFS2020), follow these steps please:

1. Ensure that your monitor supports G-SYNC technology. G-SYNC is designed to synchronize the refresh rate of your monitor with the frame rate of the game, reducing screen tearing and providing a smoother gaming experience.

2. Make sure G-SYNC is enabled in your NVIDIA Control Panel. Right-click on your desktop and select "NVIDIA Control Panel." Under the "Display" category, click on "Set up G-SYNC." Check the box that says "Enable G-SYNC, G-SYNC Compatible," and select your desired G-SYNC mode (e.g., Full screen, Windowed, or Both).

3. In MSFS2020, go to the graphics settings. Ensure that V-Sync is turned off in the game settings. This allows G-SYNC to take full control of the refresh rate.

4. Adjust the frame rate limit in "NVIDIA Control Panel" for MSFS2020. It is recommended to set a frame rate limit slightly below your monitor's maximum refresh rate. This helps to maintain a consistent frame rate within the G-SYNC range, typically 30-144Hz.

5. Test and fine-tune the settings. Launch MSFS2020 and observe the gameplay. If you notice any issues like stuttering or tearing, you may need to adjust the frame rate limit or G-SYNC settings to find the optimal balance for your system.

Remember, G-SYNC is most effective when your frame rate is within the G-SYNC range of your monitor. If your frame rate consistently falls below the G-SYNC range, you may experience some tearing or stuttering. Experiment with different settings to find what works best for your specific hardware configuration.

28 minutes ago, Sethos said:

Not sure how relevant this is but (on Windows 11), try opening Settings -> Gaming -> Game Mode -> "Related Settings" Graphics -> Change default graphics settings -> Enable or Disable "Variable refresh rate" depending on current position. Believe it's best to keep it disabled, as it's another form of VRR within Windows that could cause some issues.

This was interesting, I turned off Windows "Variable refresh rate" following a tip on Youtube and found that my EA PGA golf game was running smoother, I haven't tried it in MFSF yet.

Since you're going to try out a few settings then I'll throw mine into the ring. I was having stutters and tearing until I came across the following settings. I currently run a 4090 on a LG C2 G-Sync 120hz Display. I tried G-Sync with both Windows and Full Screen options selected but I was just not happy with the smoothness and the occasional stutter the display was handling G-Sync. It was very close but not perfect in my eyes.

So now I use the following settings for silky smooth performance. I have listed two driver versions below. Each one had a difference effect on FrameRate settings. 

Nvidia 522.25

(MSFS2020)
Anti-Aliasing: TAA
Frame Generation: ON
DirectX Version: DX12
V-Sync: OFF

(NCP)
Frame Rate: 59 <--Frame Generation will be 118FPS. I keep my frames just below my max 120hz. 
Power Management Mode: Maximum Performance
Vertical Sync: Use 3D application setting. <--It's off in sim.

Nvidia 531.29

(MSFS2020)
Anti-Aliasing: TAA
Frame Generation: ON
DirectX Version: DX12
V-Sync: OFF

(NCP) 
Frame Rate: 118 <--Frame Generation will be 118FPS. The 531.29 drivers will not let me set half the FPS as 522.25 
Power Management Mode: Maximum Performance
Vertical Sync: Use 3D application setting. <--It's off in sim.

Again, my settings are if you plan to use FG and DX12. I'm also back on 522.25. Just wanted to share my smoothness settings. Each system will be different. 

Good luck on finding your settings. 

Edited July 19, 20232 yr by Wise87

7 minutes ago, Wise87 said:

Since you're going to try out a few settings then I'll throw mine into the ring. I was having stutters and tearing until I came across the following settings. I currently run a 4090 on a LG C2 G-Sync 120hz Display. I tried G-Sync with both Windows and Full Screen options selected but I was just not happy with the smoothness and the occasional stutter the display was handling G-Sync. It was very close but not perfect in my eyes.

So now I use the following settings for silky smooth performance. I have listed two driver versions below. Each one had a difference effect on FrameRate settings. 

Nvidia 522.25

(MSFS2020)
Anti-Aliasing: TAA
Frame Generation: ON
DirectX Version: DX12
V-Sync: OFF

(NCP)
Frame Rate: 59 <--Frame Generation will be 118FPS. I keep my frames just below my max 120hz. 
Power Management Mode: Maximum Performance
Vertical Sync: Use 3D application setting. <--It's off in sim.

Nvidia 531.29

(MSFS2020)
Anti-Aliasing: TAA
Frame Generation: ON
DirectX Version: DX12
V-Sync: OFF

(NCP) 
Frame Rate: 118 <--Frame Generation will be 118FPS. The 531.29 drivers will not let me set half the FPS as 522.25 
Power Management Mode: Maximum Performance
Vertical Sync: Use 3D application setting. <--It's off in sim.

Again, my settings are if you plan to use FG and DX12. I'm also back on 522.25. Just wanted to share my smoothness settings. Each system will be different. 

Good luck on finding your settings. 

Thanks for this, my new rig 7800X3D + 4090 arrives on Friday.  I've got a new 4k GSYNC monitor already so this is useful.

9 minutes ago, Wise87 said:

Since you're going to try out a few settings then I'll throw mine into the ring.

That's a really interesting observation how FG capping functions between driver version, seen a lot of confusion around that which might be because people are on older versions. Thank you for that information.

If I limit the FPS to say 140 with  my refresh rate being 144 will I get stutters if I can't maintain that?  Obviously won't be many situations where I can hit FPS that high but I assume that gsync will keep things smooth.  I run 531.29 so I've been setting the limit in NCP what I'm actually showing with an external FPS counter not in game.

6 minutes ago, sfgiants13 said:

If I limit the FPS to say 140 with  my refresh rate being 144 will I get stutters if I can't maintain that?  Obviously won't be many situations where I can hit FPS that high but I assume that gsync will keep things smooth.  I run 531.29 so I've been setting the limit in NCP what I'm actually showing with an external FPS counter not in game.

Stutter is perhaps a bad word to use here, because a stutter would denote a frametime jump or a small freeze in the rendering, something G-sync / Freesync can't do anything about, so you'd see the stutter either way. However, if it's consistent frametime but simply a lower FPS, G-Sync should make the image tear free as the framerate drops below whatever you've capped your framerate at, yes. But you would leave a lot more headroom for your hardware if you capped your framerate lower, which could mitigate some occasional stutters, lower performance or just the variance in performance differences.

Edited July 19, 20232 yr by Sethos

Turn on the Nvidia g-sync overlay to ensure that gsync is functioning correctly. And ALWAYS keep the sim in focus, especially if you have other programs running in the background or on a separate monitor. If you remove the focus, g-sync will temporarily disable until you click the sim window back in to focus. (This is the reason I run charts and my touchscreen monitors with air manager on a separate PC, so they don’t interfere with the focus of msfs on my g-sync display.) 

Edited July 19, 20232 yr by Ianrivaldosmith

34 minutes ago, Ianrivaldosmith said:

Turn on the Nvidia g-sync overlay to ensure that gsync is functioning correctly

I've not seen this, but my display shows Gsync is enabled.  How do you get the NV overlay to display?  Thanks

What a great and timely thread.

I have just ungraded my PC this last week. Went from a 9900KS to an AMD 7800X3D. I have had an RTX4090 on the old system for a couple of months. I have an Alienware AW3821 G-sync capable monitor (144Hz).

On the old system using FG, tearing was not an issue because I simply could not get the FPS up to the 144Hz limit. However with the new rig I have had a hard time controlling the tearing because in certain circumstances it can achieve FPS at or in excess of 144 (using FG). This is even true in the PMDG 737 at cruise. 

The first thing I did was cap the frames at 140FPS in NVCP and enable Vsync. This helped slightly but the tearing was still pretty bad. Next capped frames at 120FPS in NVCP and this brought about another improvement but still not very good.

Finally capped frames at 90FPS in NVCP and this has made the tearing almost eliminated. Occasionally switching between views you will see a slight tear/ripple through the screen.

This caps the MSFS FPS at 45. While this is still good, at 45FPS it does allow some slight artifacts view switching or movement.

I was surprised that using NVCP and capping at 140FPS didn't bring me nirvana considering other peoples experiences. 

Current Settings..............

• Driver 535.98
• NVCP Cap: 90FPS
• NVCP Vsync ON
• NVCP Power Management: Prefer Maximum Performance
• MSFS AA: TAA
• MSFS FG: On
• MSFS: Vsync Off

It may be that Frame Generation and V-sync/G-sync are still in their early days and hopefully further improvements will come about.

I will continue to tinker and see what happens. I must say that one of the biggest improvements for me in flight simming was the purchase of a G-sync capable monitor. I don't see how I could go back to not having one.

So turning on gsync in windowed mode as well mostly solved the screen tearing. Pretty smooth and acceptable on that front. But I’m still having stuttering which I’m guessing is due to the jumping around of fps. I’ll go from the 40s to 70s or higher. I’m going to experiment with locking the fps lower and vsync later this week when I have time. This was tested at lax so one of the more demanding areas of the sim. 

Edited July 20, 20232 yr by sfgiants13

I have a perfectly smooth sim with these settings: 

• NVCP: GSync on for full screen applications only; 3D settings: Default for everything (the VSync setting used is the one selected in the games)
• MSFS: VSync on, 100% monitor refresh rate, nVidia Reflex on

With these settings I can cap the framerate down to 40 fps with Rivatuner and the sim is still impressively smooth, even during panning or steep turns.

I keep the framerate capped at 48 to cover also helicopter and fighter jet rides and really, it's so smooth that I don't need any more fps and I prefer to have a quieter PC (the RTX 3090 gets noisy when it has to dissipate 350W).

However I have a true GSync monitor (with the GSync chip), not a compatible one... so results may vary depending on your monitor.

3 hours ago, MrFuzzy said:

However I have a true GSync monitor (with the GSync chip), not a compatible one... so results may vary depending on your monitor

Yet you’re not using it? So, what’s the point? 

52 minutes ago, Ianrivaldosmith said:

Yet you’re not using it? So, what’s the point? 

I am using it. With framerate capped at 48 fps, monitor refresh is 48 Hz and it's super smooth.

I may leave everything uncapped and run the sim at 70-80 fps / 70-80 Hz but then the fans would get loud with no benefit for FS. 

When I play first person shooters I leave it uncapped to maximize responsiveness but for a flight simulator it's not needed...