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

[Noel 4,563]

47 minutes ago, Cpt_Piett said:

This mode is mainly intended to be used in conjunction with DLSS Frame Generation, which is generally not compatible with any third party framerate limiters.

Patently untrue since RTSS' edge sync modes work wonderfully.

I give, where the heck is Nvidia Reflex frame limiter?  I don't see it in RTSS

Oh, they're not calling their limiters 3rd party

Edited February 21 by Noel

[Cpt_Piett 4,817]

1 hour ago, Noel said:

I give, where the heck is Nvidia Reflex frame limiter?  I don't see it in RTSS

I have v1.3.5. 

Just finished a flight in the Fenix and did a benchmark for EGLL 27R approach via Lambourne. This was with RTSS framerate limiter set at 60 FPS and front edge sync. It doesn't get much better than this 😄 It's the best result I've had so far - and I'm not even in the beta! It's astonishing really, descending directly over London CBD with it's photogrammetry and Orbx London - and then into iniBuild's Heathrow. I'm almost speechless - I've never even dreamt of performance like this in a flight sim.

Edited February 21 by Cpt_Piett

[Ixoye 1,837]

42 minutes ago, Cpt_Piett said:

I have v1.3.5. 

Just finished a flight in the Fenix and did a benchmark for EGLL 27R approach via Lambourne. This was with RTSS framerate limiter set at 60 FPS and front edge sync. It doesn't get much better than this 😄 It's the best result I've had so far - and I'm not even in the beta! It's astonishing really, descending directly over London CBD with it's photogrammetry and Orbx London - and then into iniBuild's Heathrow. I'm almost speechless - I've never even dreamt of performance like this in a flight sim.

I try this settings also and it was incredible smooth, best experience ever...Thank's a lot guys 👍

Edited February 21 by Ixoye

[Noel 4,563]

46 minutes ago, Cpt_Piett said:

I'm almost speechless - I've never even dreamt of performance like this in a flight sim.

Ah thanks--must be a newer version as it's not there, which was where I first looked.

Yep, that's what I'm seeing as well, even with my lowly 9900K now loafing along at 48C.  My sense is this ultra low FTV is very receptive to FG frames w/o loss of superb frame pacing which your capture demonstrates in spades.   I really hope they add some scalable improvements in cloud depiction and other GPU hungry attributes for MSFS 2024 we could be in for some killer enhancements.  Not too confident this will happen but still possible!

Edited February 21 by Noel

[RJC68 823]

Interesting when I got my 4090 last year I tried using Riva Tuner as I had done before with my 3090 & 3080TI before that, it was a horrible experience, yes the FT variance was very low, basically a flat line but I was constantly getting micro stutters. Then I found my current setup and have not looked back

NVCP:

Low Latency - Ultra

Monitor - Gsync Compatible

VSYNC - On

Refresh Rate - 100Hz (I could use 120Hz but I find I have some GPU overhead with 100Hz)

MSFS 2020:

DX 12

FG On

No VSYNC

When using the settings in NVCP I described above the FPS is automaticlly capped 3 below my refresh rate so for me 97FPS. This yields incredibly smooth resutls even though the FT graph in Riva showed some variation. I deleterd Riva a long time ago, I found any type of FPS limiting externally gave me worse results. I haven't touched my settings for over 6 months and every day I fly it is super smooth.

Are you guys using GSYNC?

Edited February 21 by RJC68

[Noel 4,563]

8 minutes ago, RJC68 said:

I tried using Riva Tuner as I had done before with my 3090 & 3080TI before that, it was a horrible experience...

My guess is you didn't use one of the two edge syncs, which is the raison d'être for using RTSS in MSFS.  Others will use its scanline sync, or async, but never edge sync has been discussed, save by yours truly.

 

[RJC68 823]

3 minutes ago, Noel said:

My guess is you didn't use one of the two edge syncs, which is the raison d'être for using RTSS in MSFS.  Others will use its scanline sync, or async, but never edge sync has been discussed, save by yours truly.

 

I actually followed your exact tutorial when I first got my 4090, that is how I was running the Sim with my 3090 and was producing FT Variance graphs like yours. Maybe it is GSYNC that is throwing me for a loop when limitimg frames externally. I know I cannot produce a FT variance graph like yours but with the settings I have and GSYNC on my 55 inch Sony X90K it is the smoothest experience I have ever seen in all my many years of flight simming. Combine this with the awesome adaptive LOD app and I can finally use FSLTL to it's full potential and still have a smooth stutter free experience from gate to gate.

[Ixoye 1,837]

6 hours ago, RJC68 said:

Are you guys using GSYNC?

I am, you should definitely try RTSS front edge sync capped at 60, it was like Flight Sim Nirvana experience for me, but I have only try it in one flight so far, but I hope it holds up, btw i'm in the Beta.

Edited February 21 by Ixoye

[RJC68 823]

3 hours ago, Ixoye said:

I am, you should definitely try RTSS front edge sync capped at 60, it was like Flight Sim Nirvana experience for me, but I have only try it in one flight so far, but I hope it holds up, btw i'm in the Beta.

So you are not running any VSYNC, NVCP or in the Sim?, Are you running with FG?, Also are you using RTSS to cap the FPS? and lastly what refresh rate are you running?

This might be worth investigating further 

[RJC68 823]

On 2/19/2024 at 12:25 PM, Cpt_Piett said:

The way I do it is to set native monitor refresh rate in NCP. Nvidia reflex (defaults to on whilst using FG in MSFS settings) should take care of the rest. For added peace of mind though one can limit FPS to 3 lower than native monitor refresh rate using either NCP or something else (I use RTSS).

I have just been reading this whole thread, From my testing last year any type of external FPS limiting causes micro stutters when using FG. Just force VSYNC On in NVCP and use Ultra Low latency. This is the way you need to run GSYNC properly. Your fps will automatically be capped 3 below your refresh rate (I use 100 on my Sony X90K so I get 97 FPS)  I have zero stutters or artifacts and GSYNC keeps things smooth if the FPS does drop.

[Noel 4,563]

15 minutes ago, RJC68 said:

From my testing last year any type of external FPS limiting causes micro stutters when using FG.

Just not true Richard, at least for myself and a few others.  Not a micro, macro or other stutter....ever!  If you're already there, Nirvana, no need to explore further 😉

Edited February 21 by Noel

[Cpt_Piett 4,817]

15 minutes ago, RJC68 said:

I have just been reading this whole thread

Welcome to the party Richard 🤓 I agree with most of what you say, in fact it’s only in the last few days I’ve become convinced of the G-sync/V-sync combo. Not so sure about stutters introduced by external FPS limiting though. Look at my example with the last CapFrameX bench - it’s basically stutter-free. That was with a RTSS framecap.

 

Edited February 21 by Cpt_Piett

[Noel 4,563]

2 minutes ago, Cpt_Piett said:

Look at my example with the last CapFrameX bench - it’s basically stutter-free. That was with a RTSS framecap.

I'm confused, you said you used edge sync for that, but then said Nv Reflex.  Can't be both from the dropdown?

[RJC68 823]

9 minutes ago, Cpt_Piett said:

Look at my example with the last CapFrameX bench - it’s basically stutter-free. That was with a RTSS framecap.

Maybe my RTSS was outdated, I ran CapFrameX and got results like yours, literally zero FTV but in the sim I was getting micro stuttering that did not seem to show in the CapFrameX software. I just put it down to limiting FPS externally with FG.

I have some time over the next 2 days to test. I will install the latest version of RTSS and see how it goes

[Cpt_Piett 4,817]

10 hours ago, RJC68 said:

Combine this with the awesome adaptive LOD app and I can finally use FSLTL to it's full potential and still have a smooth stutter free experience from gate to gate.

It’s a game-changer! A real gem 💎 Forgot to load it before a test flight yesterday and couldn’t fathom why I suddenly had hard stutters when panning. I was probably at TLOD 400 or something, at Heathrow.

Just did a little experiment since locked FPS has given me so much GPU-headroom. Decided to test DLDSR at 2.25x the native resolution of 3840x2160. That’s 19,9 megapixels vs 8,3, pretty crazy. And lo and behold, the 4090 managed to pull it off. Just. It was running at a constant 100%. 

I turned it down to 1.78x native which still gives amazing cockpit clarity, but at a lesser cost. It’s one of the few times since getting the 4090 I’ve seen mainthread and GPU frame times almost perfectly in sync.