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Sim Update 3 Beta (1.5.4.0) Release Notes - May 29, 2025

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I think we are getting there with SU3. With SU2 Wednesday with my 3060ti it was just a complete stutter-fest even on spawn. The JF F28 was just spamming GPU Resource errors, and the Fenix wasn't any better.

Last night I did a flight from ATL-DCA in the 772 with SU3. No GPU alerts and the approach was fine. I then immediately spawned in the Fenix and was able to pan around smoothly. I did get a GPU error on spawn. 

I did not attempt a full fight in the Fenix.

I think I am still going to be in 2020 for a bit anyway, but I think things are getting better.

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  • Wow, getting amazing thunderstorms now with live weather, with lots of lightning. Try KCRG now. Finally!

  • KERNEL32
    KERNEL32

    YES! They slipped that short line in the patch notes but WOW what a difference I'm seeing in the storms. One step at a time, I am very happy and impressed that they are finally making some updates to

  • I see lightning at KSFB, not over the airport but 5 or so miles away. Edit: Getting lots of turbulence inside the thunderstorm clouds too, this is awesome.

6 minutes ago, BrammyH said:

Last night I did a flight from ATL-DCA in the 772 with SU3. No GPU alerts and the approach was fine. I then immediately spawned in the Fenix and was able to pan around smoothly.

Funny, I'm having the reverse experience in SU3, I spawned at RJTT in the Fenix A321 and was sitting at 12-15 FPS until I got to cruise. While in SU2 I was not having that issue.

Edited by Tuskin38

38 minutes ago, JRBarrett said:

Lighningmaps.org is powered by the Blitzortung network, which is a crowdsourced free network of privately hosted detectors operated by weather hobbyists. I myself hosted a Blitzortung detector at my home for several years. Those who participate bear the costs of the required hardware and internet connection out of pocket. Access to the network is free, but it not intended for commercial use.

For that reason, I doubt that Microsoft or Meteoblue could or would use Blitzortung data in a commercial software application like MSFS. 

The two leading providers of commercial lightning detection services are Vaisala, who operate the NLDN network that covers the continental US, and EarthNetworks which has worldwide coverage. I have no doubt that MeteoBlue has access to both systems. The problem is that r/t lightning data is extremely expensive. The price MB would pay for access would depend on the number of clients they resell the data to. Whether MB included r/t lightning data in LiveWeather or Asobo contracted directly with Vaisala or EarthNetworks, the cost would be enormous because of the size of the MSFS user base.

MeteoBlue would have to recover that cost by greatly increasing whatever fee they currently charge MS/Asobo for LiveWeather.

If there was a MSFS weather API that allowed external developers to inject lightning data into the sim, then they could easily leverage Blitzortung data for that purpose, but unfortunately, no such API exists.

Yes, I work with VAISALA and ALDIS, so I am well aware of that 🙂

We have our own LSN, integrated in the Euclid network.

But there could be alternatives, although I no longer have an active Meteoblue account and don't know if regristered users have access to lightning products (?)

Flying gliders since 1980

Flightsimming since 1992

AMD Ryzen 5600x, 32GB RAM, GPU Nvidia RTX 3060 Ti 8 GB, 1 TB and 500 GB nvme2 SSD drives, HP 27" 60Hz LED monitor @ 1920x1080, T16000, Hotas from old X52 Pro, Saitek Combat Rudder Pro (2010 model)

1 hour ago, BrammyH said:

I am still going to be in 2020

Be sure you've killed msfs2020 process before firing 2024

1 minute ago, Vitold69 said:

Be sure you've killed msfs2020 process before firing 2024

yeah. I've gotten in the habit of a full system restart anyway between sims.

Still not able to start MSFS 2024...

What a big s&oyt 😕

Flying gliders since 1980

Flightsimming since 1992

AMD Ryzen 5600x, 32GB RAM, GPU Nvidia RTX 3060 Ti 8 GB, 1 TB and 500 GB nvme2 SSD drives, HP 27" 60Hz LED monitor @ 1920x1080, T16000, Hotas from old X52 Pro, Saitek Combat Rudder Pro (2010 model)

Still getting little stutters on the runway before rotate, and little stutters with audio, but otherwise fairly smooth (and MSFS 2020 runs like butter), PMDG 737-700, gaming laptop, 3080.  Anyone else relate?

1 hour ago, Langeveldt said:

Still getting little stutters on the runway before rotate, and little stutters with audio, but otherwise fairly smooth (and MSFS 2020 runs like butter), PMDG 737-700, gaming laptop, 3080.  Anyone else relate?

I was getting terrible FPS at RJTT compared to SU2, but was fine after takeoff and the rest of the flight.

  

1 hour ago, jcomm said:

Still not able to start MSFS 2024...

What a big s&oyt 😕

Try reinstalling completely, including deleting the files in AppData

Edited by Tuskin38

1 hour ago, Langeveldt said:

Still getting little stutters on the runway before rotate, and little stutters with audio, but otherwise fairly smooth (and MSFS 2020 runs like butter), PMDG 737-700, gaming laptop, 3080.  Anyone else relate?

When I get little stutters with audio, I go to Sound settings and make sure the MIC and the speakers are using the exact same source. And that neither is listed as the Windows default.

The temporary stutters after an update seem to occur when I don't clear all the shader cache. But eventually they will soon go away on their own. 

5800X3D, RTX4070, 600 Watt, one or two 1440p 32" screens, 64 GB RAM, 4 TB  PCle 3 NVMe, Warthog throttle, VKB NXT EVO stick, Honeycomb Alpha yoke, CH quad, 3 Logitech panels, 2 StreamDecks, Desktop Aviator Trim Panel. Crystal Light VR.

 

4 hours ago, Tuskin38 said:

I was getting terrible FPS at RJTT compared to SU2, but was fine after takeoff and the rest of the flight.

  

Try reinstalling completely, including deleting the files in AppData

That did it !!! THX 👍

Flying gliders since 1980

Flightsimming since 1992

AMD Ryzen 5600x, 32GB RAM, GPU Nvidia RTX 3060 Ti 8 GB, 1 TB and 500 GB nvme2 SSD drives, HP 27" 60Hz LED monitor @ 1920x1080, T16000, Hotas from old X52 Pro, Saitek Combat Rudder Pro (2010 model)

On 5/30/2025 at 7:46 AM, Alvega said:

Edit: Getting lots of turbulence inside the thunderstorm clouds too, this is awesome.

Oooh, is cloud turbulence working now in all types of cloud?

i910900k, RTX 3090, 32GB DDR4 RAM, AW3423DW, Ruddy girt big mug of Yorkshire Tea

2 hours ago, scotchegg said:

Oooh, is cloud turbulence working now in all types of cloud?

I just did a flight in the PMDG 777F from KMEM to KOAK at FL360. 2024 SU3 beta 4. Flying over the front range of the Rocky Mountains, I was getting quite a bit of turbulence. It wasn’t from thunderstorms - skies were mostly clear. It was more like mountain wave turbulence I assume.

Jim Barrett

Licensed Airframe & Powerplant Mechanic, Avionics, Electrical & Air Data Systems Specialist. Qualified on: Falcon 900, CRJ-200, Dornier 328-100, Hawker 850XP and 1000, Lear 35, 45, 55 and 60, Gulfstream IV and 550, Embraer 135, Beech Premiere and 400A, MD-80.

1 hour ago, JRBarrett said:

I just did a flight in the PMDG 777F from KMEM to KOAK at FL360. 2024 SU3 beta 4. Flying over the front range of the Rocky Mountains, I was getting quite a bit of turbulence. It wasn’t from thunderstorms - skies were mostly clear. It was more like mountain wave turbulence I assume.

Thanks, but I’m specifically interested in cloud turbulence.

i910900k, RTX 3090, 32GB DDR4 RAM, AW3423DW, Ruddy girt big mug of Yorkshire Tea

6 hours ago, scotchegg said:

Oooh, is cloud turbulence working now in all types of cloud?

That would indeed be great. Again I'm wondering if it's another consequence of better live weather data processing => better depiction of dangerous weather and clouds thickness => more realistic turbulence in clouds

Need to go back and check in manual weather if clouds turbulence currently shows up better than live weather.

Edited by lwt1971

Len
1980s: Sublogic FS II on C64 ---> 1990s: Flight Unlimited I/II, MSFS 95/98 ---> 2000s/2010s: FS/X, P3D, XP ---> 2020+: MSFS
Current system: i9 13900K, RTX 4090, 64GB DDR5 4800 RAM, 4TB NVMe SSD

Can't say I noticed any turbulence in the fenix through clouds, but the clouds are definitely improved. 

They are more dense and have much better detail than before.

The big thing for me is this terrible stuttering when you land. It's not at every airport but any larger airport is a nightmare.

I know they are working on the VRAM issues, of which, I hope this stuttering is cured as part of that.

The confusing thing is that this was logged as a bug not far into the SU2 beta cycle, yet every new beta list of fixes seem to be issues that aren't show stoppers?

Anyway, I'll check I have turbulence set correctly and try it out to see if there is any in cloud.

 

i7 12700K , DDR4 64GB RAM @3600MHz, Asus Z690-Plus D4 MB, Gainward 4090 RTX Graphics, 850W Corsair PSU, Kraken AIO watercooler, Nvme 1TB ssd, 1TB ssd, 500GB ssd.

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