NVIDIA G-SYNC causing flickering display since 1.2.8.0

Bug Reporting Hub Install, Performance & Graphics
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ISSUE DESCRIPTION

Description of the issue:

Since 1.2.8.0, enabling G-SYNC causes all displays to flicker when FS2024 is loaded. The issue is of variable intensity, sometimes the flickering is very pronounced and it is less severe at other times. The issue persists while the game is minimised.

Disabling G-SYNC and reloading the game immediately fixes the issue.

Reversing this causes the issue to recur.

[PC Only] Did you remove all your community mods/add-ons? If yes, are you still experiencing the issue?

No mods/add-ons installed.

FREQUENCY OF ISSUE

How often does this occur for you (Example: Just once, every time on sim load, intermittently)?

Every time FS2024 is loaded. The issue resolves when the program is closed.

REPRODUCTION STEPS

Please list clear steps you took in order to help our test team reproduce the same issue:

  1. Enable G-SYNC in the NVIDIA app.
  2. Load FS2024.

YOUR SETTINGS

If the issue still occurs with no mods and add-ons, please continue to report your issue. If not, please move this post to the User Support Hub.

What peripherals are you using, if relevant:

X56 HOTAS Controller
Gigabyte M27Q monitor set at 165Hz, 2560x1440

[PC Only] Are you using Developer Mode or have you made any changes to it?

Developer mode loaded only to use FPS display.

[PC, MSFS 2020 Only] Are you using DX11 or DX12?

N/A

[PC Only] Many issues may be due to an outdated graphics card. Please state your Graphics Card Driver Manufacturer (NVIDIA, Intel, AMD) and Version:

NVIDIA GeForce RTX4060Ti, driver 566.36

[PC Only] What other relevant PC specs can you share?

32GB memory
Intel i9-9900K

MEDIA

Please add a screenshot or video of the issue occurring.

Unable to get good screenshot.

[END OF FIRST USER REPORT]

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Do you have the same issue if you follow the OPā€™s steps to reproduce it?
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Provide extra information to complete the original description of the issue:
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If relevant, provide additional screenshots/video:
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2

could you provide a video of the issue?

since it started after the patch one would assume its related to it

i had to turn off g-sync because my monitor flickers with it, even though it has a feature to prevent flicker on vrr, except it doesnā€™t work because all it does is cap the lower frequencies so you loose much of the benefits of using vrr

3

Have you tried putting an fps cap on a few fps below your monitors capabilities. Probably only relevant if your reaching your monitors max frame rate.

Might even be worth trying a clean re-install of your gpu drivers using Nvcleanstall software.

4

This issue was already present in FS2020. And still is.
Since I associated it with Gsync Iā€™ve been using Vsync instead and gsync disabled.
Iā€™m not sure what settings Iā€™m using with 2024 but I think I enabled gsync and disabled vsync to test it out since the launch and didnā€™t experienced flickering in general.
But I recall I few times I did, maybe a handful, but all very minor. Not as intense as in 2020.
Didnā€™t test it yet since the new update.

1 Like
5

Not happening on my end!

6

out of interest are you using vysnc in game?

I believe after research, its suggested for nvidia gpuā€™s the best settings to use with gsync is to turn off vsync, fps caps in game and use he following settings in nvidia control panel.

Low latency: Ultra
Max framerate: set a few fps below monitors maximum.
monitor technology: Gysnc compatible.
preferred refresh rate set to use highest available.
triple buffering: Off
vertical sync: On

When you say flickering what exactly are you seeing?
Is the screen flickering off and on? or is it like small artifacts/ broken up picture/corrupt image.

7

My max FPS is already well below 165Hz and usually sits around 60FPS, so havenā€™t set it. V-sync was turned off.

The flickering was basically the whole screen, no matter what was displayed on it. Sometimes it is pronounced, sometimes barely perceptible - like the contrast setting being changed rapidly.

The problem has entirely vanished since I turned off G-SYNC but I havenā€™t had any issues with other games. I filed a report after reading some people had similar issues with FS2020 but interestingly I didnā€™t.

1 Like
8

It happened to me as well, but only after running FS24 for letā€™s say an hour or more. (using G-Sync nvidia in driver settings)

I could disable the flicker by then enabling vsync in FS24 and setting FPS to 50% in the same menue. Or simply restarting FS24.

Didnā€™t had that problem before the latest patch.

9

In FS2020 for a long time I used gsync on, capped fps at 40 in NVCP and vsync off ingame and in NVCP.
Low latency on between on and ultra in NVCP, triple buffering off I think and HDR on ingame.
The flickering happens at the edges off the screen. Its a fast flicker of brightness from default bright to overexposed. Maybe like turning on and off the bloom setting but affecting only the edges of the screen. Itā€™s not like the edges go from white to black.
Usually happened when switching windows, from MSFS to a browser or some other app and back again.
Initially I associated it with the HDR but after digging in forums someone mentioned it was gsync related.
After that I turned off gsync and started using vsync in game, keeping the capped fps at 40 in NVCP and no more flicker.
In 2024 since launch I enabled gsync and kept vsync off. Other settings in NVCP are the same as in 2020.
The flickering still happens but not that often and itā€™s less pronounced. And using vsync instead also stops the flickering.
I donā€™t recall if we can cap the fps in game without turning on vsync. Isnā€™t the capped fps ingame associated with the vsync and the various settings for the refresh rate in both sims?
And using both gsync and vsync together kinda defeats the purpose of gsync no?
With both on and if I dont manually cap the fps to the value I want the fps will be capped according to the refresh rate setting I choose ingame. I.e. it will cap at 120, 60 or 30 fps in a 120hz display.
Cheers

10

I believe using gsync on its own can still result in screen tearing if the fps goes beyond the monitors refresh rate. its suggested you get better performance with both combined in NVidia control panel. Others suggest g-sync reduces stuttering and and v-sync stops tearing.

I will have an experiment later and see if it makes any difference.
As Iā€™ve run it the way I am for a while now.

With the settings how I said previously Iā€™m not getting that issue myself.

Havenā€™t tested on msfs24 yet. But on another game eafc25 turning v-sync on and g-sync on in Nvidia control panel gained me a few fps and slightly lower latency. with just g-sync enabled there is a noticeable stutter in player movement.
Having tried low latency setting it doesnā€™t seem to make any difference from ultra or off. Have heard that some games ultra causes higher latency.

When ive tried on msfs24 ill update.

12

Im using a Samsung G7 at 3840x2160 144hz
In the Nvidia Control Panel i have set

  • Tripple Buffering : On
  • Max Refresh Rate: 141 FPS
  • Low Latency: Ultra
  • Threaded Optimization : On
  • Vertical Sync: Application contolled

G-Sync Mode is set On for Full-/Windowed Games.
In MSFS2024 im using FrameGeneration.

But, to aviod In-Game smering i had to set VRR to On inside the Monitors control settings ā€¦ no flickering at all ā€¦ but flickering is not always the sameā€¦ in msfs2020 flickering happend when i set AMD Sharpening to 0, bloom onā€¦ (this is not a issue in msfs2024 anymore) ā€¦ but it was a flickering, and a different flickering that other flickerings ^^

13

at OMDB this morning in the fbwa30 i had the issue where fps go down to 4-5 fps (4080s 64gb ram etc).

If I WINDOWED and made the program not maximised, i had smooth fps, back up to 70. The moment i maximised the window, or full screen, same issue.

I wonder, if disabling gsync for MSFS products, is just the way to go? Why would this be happening?

14

I also noticed a strange screen flickering issue recently, and I donā€™t recall ever having had the issue. It took me a long time to figure out a solution, but for me, this made it stop:

  • Set monitor refresh rate to 60 Hz in Nvidia Control Panel/Windows Display settings (was 120 Hz before)
  • Set Vertical Sync to ā€˜Fastā€™ in Nvidia Control Panel
  • Cap maximum FPS at 56 in Nvidia Control Panel

My system specs are:

  • RTX 4090 (Frame Generation ā€˜onā€™)
  • i7-12700
  • 64 GB RAM
  • Prism 49" 5120x1440 monitor capable of 120Hz (now set to 60Hz)

EDIT:

I have reverted to my previous settings, which were:

  • Monitor refresh rate 120Hz Hz in Nvidia Control Panel/Windows Display settings
  • Set Vertical Sync ā€˜Offā€™ in Nvidia Control Panel
  • No maximum FPS cap in Nvidia Control Panel

This is because with the FPS set to 56, I get too may instances of very low FPS (stutters) in the Sim, where FPS drop down to 30-40 or below. I think this is simply because the system operates at a maximum of 56 FPS, and any bottleneck has an immediately strong effect, other than dropping from e.g. 70 FPS to 50 FPS. I just need the high FPS to prevent stutters.

I think for me, for the time being, the flickering is the lesser evil than the stuttering. I also noticed that the flickering does not translate into recording. I.e., when recording footage, the footage is not affected by the flickering, which is important for my as I do videography.

2 Likes
15

Is it like this?

4 Likes
16

Yes, that looks like what I was experiencing. Stopped happening when I turned G-SYNC off.

1 Like
17

This is a LG OLED problem. Disable VRR and GSYNC in Game Optimiser settings and the problem will go away.

The problem is not related to MSFS. Any game where the FPS is below 144 on dark scenes will have this

Additional info. If you switch to another application, leaving MSFS in the background, the problem will also disappear.

18

Disabling GSYNC did work, but:

  • I donā€™t have an LG monitor
  • It has never done it with any other game
  • Minimising MSFS did not resolve the problem for me, only exiting it did.
19

Actually, I wasnā€™t talking about your problem, but about the problem above (with the video). There is clearly a problem with the LG OLED.

In your case, I donā€™t know what to say. Unless there are rumors that with the release of 50x NVIDIA drivers have become worse and work less stably with 30x and 40x cards. Perhaps this is related. Well, it is also possible that this is a bug in MSFS

21

I had the same problem and solved it by setting power management in nvidia setting to maximum performance for fs24

22

All my nvidia settings were set to default (by what i dont know ) shader cache was limited, performance mode to default ā€¦and im wondering what happendā€¦ thats strangeā€¦ after checking everything, disabling re-enabling G-Sync, VRR etc and enabled ā€œfast vsyncā€ in NVCPL its works fine in su 2 now ā€¦ never took a look into the global settings stuff as they are the same for years ā€¦ but after joining the Beta everything was messed upā€¦