Tried. No difference what so ever. On or Off.

Edited March 20, 20215 yr by Virtpilot

1 hour ago, MrFuzzy said:

Here some explanations from MS. Leave it ON: 

https://devblogs.microsoft.com/directx/demystifying-full-screen-optimizations/

Thanks for this.  I found my full screen optimisation was already off, and I am not surprised, as it has been since August when I installed it.

So, it is unfortunate, but we have yet more conflicting information, the same as windows game mode (on or off?), and things like threaded optimisation in Nvidia control panel (on or off?).  And there is at least one other game related setting in Windows to do with latency I believe, but I cant remember what that is.

With all of these settings, and with people professing different ways to set them to get the holy grail of smooth flight simulator performance, it is no surprise some of us are struggling and don't know what to do.  However, I bet all of our settings were not uniform before the update that ruined performance, so although you might get a little bit of extra performance change either way, this is barking up the wrong tree regarding the bad stuttering / pausing issue.

I was getting 30FPS smooth with the new page refresh system put into the sim (vsync 30), and it was (and still is) great, but I believe the stutter / pause / GPU at 0% thing is a completely different issue, and actually started when they smashed all of the terrain spikes down in the UK update.

So, what I take from this is, these bad stuttering pausing issues are not related to FPS performance.  I can get great fps performance easily and smoothly in complex areas, then boom, all goes to hell as I fly somewhere completely random (or known areas now). 

The problem is quite obviously with the sim, and it is pointless chasing the solutions such as offered here as 'the fix'.  It needs Asobo to do it with a hotfix or another update, and with all the good intention in the world, nobody else can.
 

 

 

Quote

So, it is unfortunate, but we have yet more conflicting information, the same as windows game mode (on or off?), and things like threaded optimisation in Nvidia control panel (on or off?).  And there is at least one other game related setting in Windows to do with latency I believe, but I cant remember what that is.

Game mode should not make any difference for a mid - high end CPU, except that prevents Windows Update from downloading and installing updates. I leave it ON.

Threaded optimization should be left on Auto, which means ON for any modern game (DX10 and above). The driver knows that, therefore the default setting is Auto.

Hardware accelerated GPU scheduling (HAGS) is not supposed to make any difference for now. Maybe 1-2% more fps in GPU limited situations. If it does not hurt (which was not the case for VR until the release of 461.92 drivers) you can leave it ON (I do).

As for the Low latency setting (or pre-rendered frames), it reduces the number of pre-rendered frames to 1 and reduces latency at the cost of CPU performance, which is not a good thing for an often CPU limited game as MSFS. nVidia recommends low and ultra low settings in GPU limited conditions at a framerate between 60 and 100 fps, which is clearly NOT the case of MSFS.

https://www.nvidia.com/en-us/geforce/news/gfecnt/gamescom-2019-game-ready-driver/

Moreover smoothness is way more important than latency in a flight simulator. You don't have to shoot a human opponent in the head before he shoots you, you just pray for fluid turns and smooth visuals when you turn your virtual head to look out of the window.

I leave Low latency OFF.

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With all of these settings, and with people professing different ways to set them to get the holy grail of smooth flight simulator performance, it is no surprise some of us are struggling and don't know what to do.

True, but there is a simple way to avoid getting lost in all these settings and it's the basis of any scientific method:

- Update the system to the latest BIOS and reset it to default settings with only the XMP profile set manually (remember how many people forgot hyperthreading off on their quad core i7s and suffered from terrible stuttering last August?)

- start with a fresh installation of the most updated versions of Windows, drivers and sim. Leave everything to default settings. The priority is to check if everything is working properly and gives more or less the performance expected, there is time to experiment later. Moreover nVidia and MS programmers are not fools, if they set things in a certain way there may be some margin of improvement (very often at the cost of visual quality) but it's very unlikely that "GamerBoySimmerGuy89" on Youtube can make miracles.

- test it with standard and reproducible conditions (the landing challenges for example) with a graphics preset 

- change ONE and only ONE parameter at once and take note of the performance every time. It may seem time consuming, but so is trying random tutorials and this method at least brings results. Even spending two days testing and realizing in the end that the default, starting situation is the best one, is a result!

There are unlimited hardware configurations and combined with different versions of OS builds, drivers, driver settings, Windows settings, BIOS settings, registry keys and other parameters changed by the user or other software, it is really pointless to watch a video on YT or read a tutorial and hope that the tips and workarounds suggested (even if they actually work on the youtuber's PC and they are not placebo) fit for our unique situation.

There is no holy grail, just some experimental work to do in order to improve things a little bit over the default settings maybe. Don't expect miracles from home remedies: only Microsoft and Asobo can improve the sim radically.

Quote

However, I bet all of our settings were not uniform before the update that ruined performance, so although you might get a little bit of extra performance change either way, this is barking up the wrong tree regarding the bad stuttering / pausing issue.

I was getting 30FPS smooth with the new page refresh system put into the sim (vsync 30), and it was (and still is) great, but I believe the stutter / pause / GPU at 0% thing is a completely different issue, and actually started when they smashed all of the terrain spikes down in the UK update.

Yes, what happens at 76T and other locations (1 fps) is certainly a bug and must be sorted out by Asobo.

Edited March 20, 20215 yr by MrFuzzy

@MrFuzzy  Well...  Thanks for that.  That is the most interesting, factual, and common sense reply I have seen for a long time! 👍

1 hour ago, MrFuzzy said:

As for the Low latency setting (or pre-rendered frames), it reduces the number of pre-rendered frames to 1 and reduces latency at the cost of CPU performance, which is not a good thing for an often CPU limited game as MSFS.

I leave Low latency OFF.

I set Low Latency to Ultra because in my system w/ it's relatively lowly RTX 2070 Super, in the TBM930 which is all I use in MSFS currently, I'm never CPU limited, in fact very far from it.  What I can easily demonstrate is setting LL to Ultra gives my 2070 Super ~12-15% more headroom, or effectively reduces utlization by 12-15% which is significant, w/ no adverse impact on stable, fluid video.

2 hours ago, Noel said:

I set Low Latency to Ultra because in my system w/ it's relatively lowly RTX 2070 Super, in the TBM930 which is all I use in MSFS currently, I'm never CPU limited, in fact very far from it.  What I can easily demonstrate is setting LL to Ultra gives my 2070 Super ~12-15% more headroom, or effectively reduces utlization by 12-15% which is significant, w/ no adverse impact on stable, fluid video.

But with 85-88% GPU utilization are you not limited by main thread? Such is the effect of ultra low latency setting, and it also causes a lower framerate. Unless you limited your framerate to a fixed value intentionally, it would be better to have 100% GPU utilization.

Also, for the purpose of running performance tests, framerate should be unlimited. 

12 minutes ago, MrFuzzy said:

But with 85-88% GPU utilization are you not limited by main thread? Such is the effect of ultra low latency setting, and it also causes a lower framerate. Unless you limited your framerate to a fixed value intentionally, it would be better to have 100% GPU utilization.

Also, for the purpose of running performance tests, framerate should be unlimited. 

Not at all MrFuzzy.  Main thread CPU16.  KORD

And of course this a core feature of this, where Low Latency at Ultra always offers 12-15% lower utilization for the same result.  This is most helpful of course in systems like mine where the GPU becomes limited more easily:

https://www.avsim.com/forums/topic/597447-double-performance-with-a-geforce-rtx-30-series-upgrade/?do=findComment&comment=4500244

Had I changed LL to off or low, GPU utilization would be more like 86% instead of 76% you see here.  Once the GPU is pegged, it's all over for maintaining vsync to 30Hz, so of course this is relavent.

 

Edited March 20, 20215 yr by Noel

OK, it is limited to 30 fps as I thought. However I agree that 30 consistent fps is better than 41 with stuttering.

ooops lol thread wasn't showing disregard video

Edited March 21, 20215 yr by ryanbatcund

no difference for me if on or off.
i firmly think that if you apply this tweak and it works, means that your system have some problems.

Testing disabling text to speech in sound option.  Also doing this enables external hud to show up when it was set off initially. 

Edited March 24, 20215 yr by 40track
Doesn't work.

I put my simpit under a copper pyramid. Amazing! 🙀 

5 hours ago, 40track said:

Doesn't work.

Ofcourse, as expected

I heard its based on the number of coconuts on a coconut tree in the scenery. Over a certain number and BAM 3 FPS,. I could see that because coconuts have a lot of hairs that are depicted as Particles

Regrds

1 hour ago, Alberto Zanot said:

Ofcourse, as expected

Disappointment sim of 2021. Now for the wait from Asobo.

Edited March 24, 20215 yr by 40track