Edit: Sorry I’m not in the beta! I just followed a link to the post on the photogrammetry airports and posted without realizing the forum.
I just tried the trick of disabling the photogrammetry cities. I did a before/after sitting at gate E9 at JFK. No traffic, calm weather. FPS went from ~25ps before to 50-60fps after. That is an astounding bug. What on earth would be causing it?
MS store version here. There’s not much in the way of steps to reproduce. Texture quality to High or Ultra, spawn in to an area with photogrammetry, and watch MainThread be your near-perpetual performance limitation for the flight. MainThread is the performance limit on my Ryzen 5800x system running 4k 100% resolution scale on an RX 6900 XT. I should by all counts be GPU limited pretty much constantly, but only find myself GPU limited at cruise altitude sometimes.
Then we compare modern 8c/16t AMD and Intel CPU’s to the Ryzen 5800x3d. I wouldn’t say that the CPU is that much better than the existing CPU’s, but it is wild to see that the giant cache alleviates the MainThread bottleneck as well as it does.
That speaks more of what and how the game is currently asking of DirectX 11 and it’s inherent limitations.
I truly hope Asobo go all-in with DirectX 12 optimizations and multi-threading. TL;DR: for those that don’t know, DX12 isn’t a fix-all in and of itself, but it does open a multitude of doors that Asobo can use to make the game engine flow differently. Asobo will be the ones who determine the magnitude of a difference that DirectX 12 makes once optimizations begin… We’re cheering yall on, Asobo, please go all-in with multithreading and other performance optimizations <3
And according to the Dev blog updates, whenever we get DLSS implemented, this will help immensely for those who have issues or even those with lower-end rig machines (heck DLSS will help all of us who use Nvidia). I just hope it truly comes out SU10 as they keep saying – seems lately nothing comes out when they say.
DLSS will help if you’re GPU limited, but in most cases people’s stuttering is caused by CPU-related issues.
Sad to see this still isn’t fixed. The fps drops only happen for me while on the ground with photogrammetry turned on. If I take off my fps nearly doubles.
Turning off PG altogether resolves the problem.
I don’t think it will be fixed until the entire rendering engine is rewritten in DirectX12, and even then I have my doubts.
The weird thing is that it makes 0 sense how it behaves.
I dont know if this is the same for everyone but in my case it just makes no sense. Because it happens ONLY, and i really mean only, as soon as i touch the ground. After some 200m on the runway on arrival or from some moment in startup.
When starting up the sim on an airport very near to photogrammetry, for around 50% its either smooth or not. If its not smooth, it stutters all the time, from gate to taxi to takeoff roll until exactly my wheels lift off. At this moment, if anything, it should render MORE of the photogrammetry than it does on ground. Because only now one is able to see it actually.
On the descent its all smooth, also directly on the appraoch, with all the photogrammetry and airport in sight. Just as soon my wheels touch the ground, some 200m on the runway, it starts and usually never stops anymore*.
I dont see any difference in the resources the sim should use between “on runway” or “1m above it”. Like said, if anything one should expect lower fps as soon one can actually see the photogrammetry.
Also, while moving faster (which is the case after liftoff) more photogrammetry has to be loaded in less time available, so why does it get fluid exactly as soon the scenery is getting visible? Makes 0 sense. If it would be opposite, but not like this.
Theoretically the sim can stop all calculation of photogrammetry when the wheels touch ground and also while taxiing. But seemingly the opposite is happening. Something bashes the cpu only when on ground but not 1m above it.
This is happening independant of LOD. It happens with LOD 80 and it happens with LOD 200.
But at least i only have this with photogrammetry on BUT not everywhere. The US is very bad and it happens nearly every time. In Europe i most often can fly.
LPPT for example, i only got it once there, from 5 times arriving.
There has to be something wrong with how something works. It just makes no sense to have 10 fps while taxiing but 40-60 fps as soon the wheels leave ground.
I9900k
RTX 2080
32GB Ram
Rolling Cache active
Conclusions for my scenario:
its NOT photogrammetry per se, since i have 0 problems over a big photogrammetry city. Its ONLY on the ground near photogrammetry.
It doesnt happen everywhere, and not even 100% of the times in the same location. There are some “rules” that seem to be more common than others though. That would be A. USA is way worse, compared to EU. And B. the nearer the Photogrammetry to the airport, the more its likely to happen.
This. If DLSS only affects rendering through the GPU, then it’s only going to decrease to load on the GPU…which, as we all should know by now, will put the CPU in charge of frame rates under even more circumstances than folks are experiencing now, and will make it even harder to get GPU-bound.
You vastly overestimate the power of the average user’s graphics card. 
Yep, the two conclusions you’ve come too are the same as mine. The USA is by far the worst especially in Boston which has its airport right in the city center. Flying from LEBL in Barcelona however is very smooth with PG turned on.
LOL maybe, but I do have experience with this sim on grossly under-spec hardware. Those decade-old rigs helped me develop my tuning process too.
My kids’ setups have a 3GB M770 GPU and 2GB 1030 GPU. They both have MSFS on them. I’m not entirely certain that DLSS would boost performance substantially on theirs either, but it would be nice to be able to run their resolutions closer to naitve if DLSS allows for that. To think they will get frame rate increases out of it might be a stretch.
I know for certain that even with my “little” 3060ti and overclocked 10700K, DLSS would be a step in the wrong direction in the pursuit of smooth performance on my rig, and probably most others with a 20-series-and-up spec GPU.
COVID era gaming laptop. Pretty new but not made for MSFS.
Do you have the same issue if you follow the OP’s steps to reproduce it?
yes
Provide extra information to complete the original description of the issue:
exactly as described
If relevant, provide additional screenshots/video:
Do you have the same issue if you follow the OP’s steps to reproduce it?
Same issue.
Provide extra information to complete the original description of the issue:
Withe arrow spins during taxi nd takeoff when development mode is off. When develop mode is on the bug disapears.
If relevant, provide additional screenshots/video:
Do you have the same issue if you follow the OP’s steps to reproduce it?
Yes, exactly. Severe stuttering on take-off (up to a hundred feet into the air, roughly) and landing. On take-off it is very clear that it only happens above a certain speed, 70 knots roughly. I haven’t investigated stuttering vs speed on landing.
Provide extra information to complete the original description of the issue:
Enabling developer mode magically makes the stuttering go away. (I’m SO HAPPY I found this thread, this has bugged me for ages!) I have previously tried lowering my graphics settings all the way down to low, and have tried running at lower resolution (I run at 4K normally), disabling live weather, photogrammetry and more. None of these changes solved the stuttering. And this issue does not seem to be related to / dependent on nearby photogrammetry. (Perhaps that is a completely separate issue that is not helped by enabling dev mode?) I tested now at ESNV in the north of Sweden where there definitely isn’t any nearby photogrammetry and the stuttering was there in full force. I’m on Steam.
Every time the stutter occurs, the GPU usage dips sharply in Windows task manager. I have not been able to see any obvious CPU spikes that coincide with the stuttering.
That is a long time ago.
But, I was getting the low FPS on takeoff and landing at around 800 feet and below.
Not with DX12 and the SU 10 Beta update.
For some weird reason, I started getting micro stutters a few weeks ago, never had any issues before.
I have tried tons of ideas which have been thrown in by the community, but no luck.
Today I decided to see if I could find a pattern, and I have indeed found something:
I have been taxiing around LFSB to observe the stuttering and I set my timer. Interestingly, the stutters happen exactly every 1m and about 12-13 seconds. So something is going on every 1m and 12 seconds. Just can’t figure out what it is. Any ideas? Its definately not any auto save function (i.e. FSUIPC) as I had that disabled. Even tried it with FSUIPC disabled completely, but no change.
Edit. Just tried this at a default airport (Madrid) and exactly the same, stutters every 1m 12 seconds.
Hi
I had the very same issue up until I´ve upgraded to SU10 Beta.
Taxing to the runway, taking off and lading was a big problem, stutters upon stutters. Once in the air 1500/2000 ft, thing would get normal.
Can´t tell you how happy I am now with the Beta SU10. All the stutters stopped and the smoothness of the Sim is just great.
Hoppe this helps.
FINALLY found out what was causing my stutters. Now I mentioned in a previous post that the stutters started after my return from holidays. The only thing I did regarding my PC when I went on holiday, was to switch off my power plugs to my PC AND my Router.
Yesterday, after another re-install of Windows and MSFS, in the hope of making those stutters dissapear, I was looking at my Task Manager while I was in the MSFS Menu.
I could see those stutter spikes happening exactly the same as they did when the Sim was actually running. So stutters happening all the time, not only in game, but also when in the menu.
So I was trying to think of all the things I have tried, and the only thing I hadn’t tried yet, was cut off the internet. So, I switched off my Router and watched the Task Manager and tataaaaaa, spikes dissapeared.
To cut a long story short, I reset my Router and now my stutters are gone.
