Nope, no OLED display here, it is a DELL S2721DGF, it has an IPS panel.

3 hours ago, AnkH said:

Nope, no OLED display here, it is a DELL S2721DGF, it has an IPS panel.

I am a new 4090 owner and have been experimenting with the various options and found these settings to give the absolute smoothest experience:

NVCP

Low Latency Mode - Ultra

Max Frame Rate - Off (I tried locking 58 fps as others suggested but in the sim it gave me 58 fps and not 116 fps according to RTSS for some reason) I tried also locking to 117 fps using RTSS and while it creates a very smooth frametime with little to no variance there are stutters. The best result seems to be no fps cap at all because once FG is turned on your fps are automatically capped below your monitor/TV refresh rate (For me it is 116). Capping fps with Riva does not yield smooth results with FG on.

GSYNC - On (Full Screen)

Threaded Optimization - On

VSYNC - On (VSYNC has to be on to prevent tearing even below 120 fps) I have tried with no vsync and setting max frame rate to 116 in NVCP but panning is not smooth

MSFS 2020

Full Screen 3840 x 2160

TAA

Frame Generation - On

VSYNC - Off

Ultra Preset 

Sony X90K

Refresh Rate 120Hz using HDMI 4 (VRR) Game Mode is on automatically using VRR on this TV

I have tried with no GSYNC but while the fps are high panning is just not smooth

9 hours ago, AnkH said:

I am now in the same boat and slightly lost: G-sync is buttersmooth but it starts to flicker some minutes into the game. Vsync on and fixed refresh and framerate results in stuttering. I use a 165Hz monitor, so far not found the ideal setup. Interestingly, I had no issues with the AMD card (6900XT) using Freesync, no flickering at all. Now with the 4080 it is a mess, although I absolutely love (and need) the frame generation feature, I am slightly disappointed. Any hints on what could work on my setup without using G-sync?

Is it flickering or stuttering? Any screen tearing?

Stuttering happens quite a lot in MSFS, but flickering is usually a driver issue.

This might be silly, but do you have a really good DP or HDMI cable? Maybe check the settings of your monitor. Maybe trying to reset the settings helps.

Or you could try:

Try V-Sync On but no fixed refresh.
Or fixed refresh but no V-Sync. 

Even with a 165 Hz panel, if your GPU produces more frames than your monitor can handle, it can introduce tearing.

Edited May 8, 20233 yr by Republic3D

10 hours ago, AnkH said:

I am now in the same boat and slightly lost: G-sync is buttersmooth but it starts to flicker some minutes into the game. Vsync on and fixed refresh and framerate results in stuttering. I use a 165Hz monitor, so far not found the ideal setup. Interestingly, I had no issues with the AMD card (6900XT) using Freesync, no flickering at all. Now with the 4080 it is a mess, although I absolutely love (and need) the frame generation feature, I am slightly disappointed. Any hints on what could work on my setup without using G-sync?

My display also is 165 hz ips panel from ROG  and I encounterred flickring as you did when I was in asseto corsa competizione, as a workaround, I reduced the freshrate from 165 to 120 and no more flickering. I'm with 4090 btw

Edited May 8, 20233 yr by gabriel122

7 hours ago, RJC68 said:

I am a new 4090 owner and have been experimenting with the various options and found these settings to give the absolute smoothest experience: [...]

GSYNC - On (Full Screen)

Thanks, but as I wrote, your combination of settings results in bad flickering (not stuttering) of the screen. I do have a high-quality DP cable and I already tried the different DP ports on the GPU. To no avail. And no, it is not a result of more FPS than my monitor can handle, the flickering is visible always, in the range around 100-120 FPS (with FG on), surprisingly it is more visible when not moving at all, during movement, the flickering is minimal. 

I will try lowering my display refresh rate for a start, good idea.

6 hours ago, AnkH said:

Thanks, but as I wrote, your combination of settings results in bad flickering (not stuttering) of the screen. I do have a high-quality DP cable and I already tried the different DP ports on the GPU. To no avail. And no, it is not a result of more FPS than my monitor can handle, the flickering is visible always, in the range around 100-120 FPS (with FG on), surprisingly it is more visible when not moving at all, during movement, the flickering is minimal. 

I will try lowering my display refresh rate for a start, good idea.

This sounds like G-Sync flickering in which case you may never fully get rid of it. I had an LG 55 QNED and the flickering was terrible, I returned it for my Sony X90K which to my surprise has very minimal G-Sync flicker, it is more noticeable with HDR on in certain situations. If I were you I would definitely try lowering your refresh rate to 120Hz. Turning G-Sync off will get rid of this annoying flickering but I haven't had great results to be honest turning it off. It just is not as smooth 

This is a good article on OLED flicker...

https://www.gamerevolution.com/guides/910679-lg-oled-cx-c1-c2-g-sync-vrr-flickering-gamma-fix#:~:text=The cause of flickering on,native frequency down to match.

It will be most noticeable when frame rates are much less than refresh rate on dark scenes, and disappear as FPS gets close to your OLED native refresh rate.  In my case, my C1 OLED has a refresh of 120Hz. Before frame generation was possible, G-Sync was unusable on my OLED because my frame rates around 40FPS were way lower than my display refresh rate of 120Hz. Now that I have a 4090 and frame generation, I'm consistently at 80FPS or better, which makes the flickering a non issue or very hard to detect except in very specific night scenes.

5 hours ago, Virtual-Chris said:

This is a good article on OLED flicker...

https://www.gamerevolution.com/guides/910679-lg-oled-cx-c1-c2-g-sync-vrr-flickering-gamma-fix#:~:text=The cause of flickering on,native frequency down to match.

It will be most noticeable when frame rates are much less than refresh rate on dark scenes, and disappear as FPS gets close to your OLED native refresh rate.  In my case, my C1 OLED has a refresh of 120Hz. Before frame generation was possible, G-Sync was unusable on my OLED because my frame rates around 40FPS were way lower than my display refresh rate of 120Hz. Now that I have a 4090 and frame generation, I'm consistently at 80FPS or better, which makes the flickering a non issue or very hard to detect except in very specific night scenes.

Hi Chris,

Are you running at 120Hz refresh rate? I’m curious what your NVCP settings are compared to mine above. With my 3090 I pretty much eliminated the g-sync flicker by turning off Vsync and capping my fps with Riva. With my 4090 if I turn Vsync off panning is not smooth and RTSS frame capping doesn’t work with frame generation on. For me I have to have Vsync on + frame generation which is then super smooth but there’s more chance of g-sync flickering 

@RJC68 so far I get the least flickering with setting the ahead rendered frames in NVCP to «let the 3D application decide» instead of «1» and using «fast» for Vsync. Gsync kept on, no FPS cap.