Flickering PMDG glass cockpits w/ panning w/ Nv FG?

[Noel 4,507]

I decided to move ahead on acquiring parts for a new system build and found a deal on a new 4090 FE.  I was initially going to hold off on this until I replaced my CPU but then reasoned w/ major enhancements in multithreading maybe the best move would be to add FG so that I could dial back native frame rate from my default 35, to 25 such that w/ FG enabled we'd have a solid 50 FPS.   This theoretically would buy major headroom for my 9900K, and it sort of has, such that unless this CPU expires I can't see needing an upgrade there when 2024 debuts w/ its performance enhancements.  Plus, my only sources of stuttering now relate to insufficient VRAM.

I'm really stunned at FG:  not because of running at 50FPS, or 100FPS which is highly doable here at least up in the air a bit.  But because of absolutely heinous flickering of high-contrast imagery, such as the glass cockpits w/ their white text while panning, or panning where I can see the light colored seat cover of the co-pilot's seat, and also when panning out the side window looking at the side of the taxiway during taxi--the flicker is super prominent.   It largely happens during panning at the end of the pan, where the glass cockpit text shake for a second or two then, then settle back down, and of course looking out the window during taxi.

So yes, what I'm stunned about is that of all of the glowing commentary here about Nv FG, from people whom I thought were fanatics like myself for quality animation and imagery, nary a word about this.   I say this, because after a quick Google search revealed this is well known, and a major thread on the FS forum on this very issue.  I can set a sync lock to 60FPS/70FPS  (native 30/35) and it's no better than 50FPS.  I've tried every imaginable change in how to potentially resolve this, all to no avail:  Vsync, no vsync, Gsync, no Gsync, frame locks, wide open, etc. 

Right now if this is built-in to Nv FG and I'm pretty sure after reading about it it is, I find FG a colossal fail.   After all, panning was supposed to be a major rationale for high frame rates, and yet this flickering is anything but desirable.  So questions for y'all with RTX 40x GPUs and PMDG 737x, do you see this flickering as well?  If not, share your settings please.   The frame rate of 50 or 60 is absolutely not worth this artifact.  But as you know if you've read my posts on performance, I already had sterling performance, so this is a major downgrade, except for the VRAM, and I can see benefits already there.

I'm checking in here primarily to see if YOU also have this, but don't mind, for whatever reason, or if there is a known cure for this aberration.  I'm going to guess there currently isn't, but I ask because last night during a night flight this flickering seemed to have disappeared.  Obviously no flickering out the side window during taxi because it was dark.  But in cockpit, didn't see it hardly if at all, so I thought perhaps it resolved itself.  This morning, nope, still there.   So I've turned it off at this point.  

[JYW 2,984]

Some people gain happiness from seeing 70 FPS, in itself.   No matter what the image in front of them actually looks like. 😄

My experience with the FG mod was almost identical to yours.  So obviously I removed the mod.

I do look forward to a native FG for RTX 2X and 3X GPUs.

...but sometimes a hack in just a hack.

Edited February 18 by JYW

[MrBitstFlyer 3,880]

1 hour ago, Noel said:

I find FG a colossal fail

I also removed it for the reasons you stated.  I also went back to TAA because of the slight bluriness of DLSS.

Back to my previous stutter free and smooth 33 FPS.  

[SierraDelta 1,342]

41 minutes ago, JYW said:

My experience with the FG mod was almost identical to yours.  So obviously I removed the mod.

 

@Noel is not using the mod, but native FG on his newly-acquired 4090.

Edited February 18 by SierraDelta

[David Mills 4,774]

You guys need to make clear that you're not talking about built-in Frame Generation for Nvidia 4000 series cards. You're talking about a software patch that attempts to reproduce such frame generation without owning the necessary hardware. Far from FG being a "colossal fail," FG on the Nvidia 4000 series cards is the most glorious invention since the Big Bang dawn of the cosmos. It produces none of the graphics aberrations you mention when properly tuned and used with TAA anti-aliasing.

[David Mills 4,774]

10 minutes ago, SierraDelta said:

@Noel is not using the mod, but native FG on his newly-acquired 4090.

Then he needs to update his publicly-visible system specs, which list his current GPU as an RTX 3080 Ti FE.

Edited February 18 by David Mills

[sniper31 645]

 @Noel I have been using a RTX 4090 for over a year now, and I have never ever noticed any flickering anywhere of any kind. That goes for the PMDG 737's, Fenix A320, the BKSQ TBM850 which I am flying right now over Australia, the A2A Comanche, the Kodiak, the new DA-42....nothing but great performance and smoothness that has been talked about for a while with the 4090's. It just works for me. Sorry you are experiencing flickering, because that would drive me nuts. I cannot stand flickering or flashing. I hope you figure out what is causing it. Is the 4090 you acquired new, or second hand? Not saying it's hardware, but it could be. The only time I have had flickering problems with my PC display in anyway, it turned out to be hardware related. This was before I had a 4090 though.

[verbal 106]

The only flickering I have seen or "suffered" was in the cockpit of all planes, most noticeably the PMDG 738 and the Horizon 789, which was easily fixed by turning off bloom in the sim. 

[sniper31 645]

16 minutes ago, verbal said:

The only flickering I have seen or "suffered" was in the cockpit of all planes, most noticeably the PMDG 738 and the Horizon 789, which was easily fixed by turning off bloom in the sim. 

Maybe that is why I don't see it, because I have never been a fan of 'motion blur' or 'bloom' in MSFS.

[Ixoye 1,824]

Congrats to your 4090 Noel, try to turn off Bloom and Motion Blur as suggested, use TAA and the latest driver, and cap your frames in NVP three fps lower than your monitors refresh rate, then set G-sync to both window and full screen, I also took the plunge and got myself a 4090 last week 👍

Edited February 18 by Ixoye

[Noel 4,507]

Sorry for the confusion for those who must only have read the title.  I imagined ‘NV FG’ would be assumed to mean RTX 40xx.  The new GPU was just installed yesterday hence haven’t updated my sig.
 

I will try turning Bloom off and see if any improvement.  If not I’ll have to disable FG and be happy the VRAM is there, and also a big bump in GPU throughput which comes into play with certain clouds, though rare.  Don’t use motion blur.  And when we tackle the CPU upgrade we can hopefully manage 50FPS w/o FG.
 

 

 

[Cpt_Piett 4,710]

I think it it can be hard to describe different image "artefacts". I do get a type of "screen tearing" when panning. As I understand it this is an inherent side-effect of FG and something I was aware of before the purchase. It doesn't bother me much, especially considering the performance boost. However, it sounds like your issue is much more pronounced. 

Here's a short video in the 737 cockpit: 

https://imgur.com/44dRLrh

And here's a thread on the official forum discussing FG-related flickering: https://forums.flightsimulator.com/t/flickering-when-frame-generation-is-turned-on/609114/4

Quote

This will happen, even at high fps. I have a 4090 and I also see that. Frames that don’t exist will be created by AI. You will specially notice them in fast moving images like the cam panning. However on slow moving images (world moving below plane without cam panning) you will not notice that. AI is not as smart as human eye but we may still need AI to run this game.

 

Edited February 18 by Cpt_Piett

[Ixoye 1,824]

16 minutes ago, Noel said:

Sorry for the confusion for those who must only have read the title.  I imagined ‘NV FG’ would be assumed to mean RTX 40xx.  The new GPU was just installed yesterday hence haven’t updated my sig.
 

I will try turning Bloom off and see if any improvement.  If not I’ll have to disable FG and be happy the VRAM is there, and also a big bump in GPU throughput which comes into play with certain clouds, though rare.  Don’t use motion blur.  And when we tackle the CPU upgrade we can hopefully manage 50FPS w/o FG.
 

 

 

I saw that you have the same monitor as I have, so bump up the Render Scale to 130 now that you have the power and VRAM to do it, the image quality will improve a lot.

[Ixoye 1,824]

10 minutes ago, Cpt_Piett said:

I think it it can be hard to describe different image "artifacts". I do sometimes get a type of "screen tearing" when panning. It doesn't bother me much. However, it sounds like your issue is much more pronounced. 

Here's a short video in the 737 cockpit: 

https://imgur.com/44dRLrh

That looks like to low fps, you should be above 30 (60 FG) for it to be smooth when panning, i'm at 70-90 fps with FG and it is smooth as butter for me, but I don't fly the 737.

Edited February 18 by Ixoye

[Noel 4,507]

19 minutes ago, Ixoye said:

I saw that you have the same monitor as I have, so bump up the Render Scale to 130 now that you have the power and VRAM to do it, the image quality will improve a lot.

I used to do that, but it introduced a different kind of subtle artifact. Since then I’ve been using DSR factors 4X works quite well even on the 3080 ti