The small trees and scrub around the base of windmills finally seems to be gone! 

I opted out of SU4 because of performance issues. Does anyone know if they have addressed dynamic registration yet?

Just flew over Greece with FSLTL, Volanta, OpenXR Toolkit and Sky4Sim in use (no AutoFPS for this flight), plus various other mods.

An acceptable 31fps on the ground with slight stutters on take off, this quickly improved to 46fps in the air (half-rate in with my VR HMD which is my target FPS). During the flight however there were random performance drops leading to a slideshow, these happened 3 or 4 times in the 50minite flight and latest for a few seconds each time, these coincided with the GPU hitting 100% usage.

Aside from that it was decently smooth in flight and overall very good performance wise. Approach & Landing slight stutters with a split second 9fps on touchdown but generally "smooth enough", still not ideal and I have experienced far worse during this beta in other aircraft at other airports.

It feels much better than SU3 and previous states of the sim with regards to performance, I'm easily able to run TAA in VR now which is a massive bonus as I don't like DLSS with this Sim. It's now probably closer too if not on par with TAA & DX11 with 2020, just those random stutters/lags and take off/landing issues to sort out - after all this is a flight simulation so it needs to be butter smooth or as close as in those crucial phases of a flight.

Still unacceptable to release the beta with the VR mouse/controller issues and they still remain unfixed, get those sorted and my prediction that SU4 will be "ready" for my needs will be achieved I think, still a way to go for this Beta so plenty can change - for good or worse!

I am failing in love with SU4 😍

 

6 hours ago, MarcG said:

Just flew over Greece with FSLTL, Volanta, OpenXR Toolkit and Sky4Sim in use (no AutoFPS for this flight), plus various other mods.

An acceptable 31fps on the ground with slight stutters on take off, this quickly improved to 46fps in the air (half-rate in with my VR HMD which is my target FPS). During the flight however there were random performance drops leading to a slideshow, these happened 3 or 4 times in the 50minite flight and latest for a few seconds each time, these coincided with the GPU hitting 100% usage.

Aside from that it was decently smooth in flight and overall very good performance wise. Approach & Landing slight stutters with a split second 9fps on touchdown but generally "smooth enough", still not ideal and I have experienced far worse during this beta in other aircraft at other airports.

It feels much better than SU3 and previous states of the sim with regards to performance, I'm easily able to run TAA in VR now which is a massive bonus as I don't like DLSS with this Sim. It's now probably closer too if not on par with TAA & DX11 with 2020, just those random stutters/lags and take off/landing issues to sort out - after all this is a flight simulation so it needs to be butter smooth or as close as in those crucial phases of a flight.

Still unacceptable to release the beta with the VR mouse/controller issues and they still remain unfixed, get those sorted and my prediction that SU4 will be "ready" for my needs will be achieved I think, still a way to go for this Beta so plenty can change - for good or worse!

In your opinion, why does DCS perform so well and MSFS barely hobble past the finish line in VR? Is it because MSFS is so portly optimized for VR or is it too demanding? Genuine Question.

Oh lucky me, FS2024 freezes on me 10-15 minutes into each flight after Su4 . No warning, It just freezes and ceases to function. Anyone else?

First time i have had an issue with a beta.....

Edited September 21, 2025Sep 21 by Ed_S_Pilot

5 minutes ago, Ed_S_Pilot said:

Oh lucky me, FS2024 freezes on me 10-15 minutes into each flight after Su4 . No warning, It just freezes and ceases to function. Anyone else?

First time i have had an issue with a beta.....

i had the same problem. 10 flights in the fnx a320 all froze\crashed between 5 and 15 mins. completely uninstalled gsx and rebooted, removed everything from community except airports and spad lvar module, problem went away.

2 hours ago, Fromage_Flippant said:

i had the same problem. 10 flights in the fnx a320 all froze\crashed between 5 and 15 mins. completely uninstalled gsx and rebooted, removed everything from community except airports and spad lvar module, problem went away.

That must be it. The GSX. The aircraft i have tried all have the GSX. That sucks, Because the plane i fly IRL is GSX equipped......

 

Thank you

 

Update,

 

Tried the suggestions above but, Not matter what, The sim freezes and locks after about 10 min.  I decided to go back to SU3 and now,  No issues..... i guess i will wait on SU4 a bit longer....

 

Edited September 22, 2025Sep 22 by Ed_S_Pilot

SU 4 beta was working like a dream - good fps,good scenery, good addons.  Flew five sessions today with about three hours elapsed time with not a single problem.  Shut the computer down and did some house maintenance chores.

Decided to reward myself with a low and slow flight over Seattle and Puget Sound with the fantastic Gaist marine V7 addon.  I had been using it earlier flying around Long Beach in California.

The sim gets to the main menu in 1' 40" where I select Free Flight.  The sim then loads all the "normal" stuff but then starts reading the rolling cache and does not quit.  It reads a 20 byte record (index?) and then reads a 1,426 byte file.  I have let it run for 10-minutes and it never stops reading the cache.  

I eventually deleted the community file so there are no addons running.  Same result!  

The cache is 128GB on my fastest NVMe device which, tests perfectly with several utilities.

I know I can just delete the cache and let the sim rebuild it - but has anyone seen this happen?

 

8 hours ago, ahsmatt7 said:

In your opinion, why does DCS perform so well and MSFS barely hobble past the finish line in VR? Is it because MSFS is so portly optimized for VR or is it too demanding? Genuine Question.

No idea not flown DCS for years so can't compare the two.

I have no problems in VR su4 for simple tasks (the EFB, the knobs on the steam gauge panel instruments). But I haven't tried anything difficult like an MCDU. EDIT: I mean no problems with the mouse input.

 

Edited September 22, 2025Sep 22 by Fielder

15 hours ago, ahsmatt7 said:

In your opinion, why does DCS perform so well and MSFS barely hobble past the finish line in VR? Is it because MSFS is so portly optimized for VR or is it too demanding? Genuine Question.

DCS World 2.9 has a minimum requirement of an Intel Core i3 at 2.8 GHz.  MSFS 2024 has a minimum requirement of an Intel Core i7-6800K. The Intel Core i7-6800K is just way more powerful than an Intel Core i3 at 2.8 GHz.

The ground in DCS World is not even close to MSFS 2024, it's leagues apart, because MSFS 2024 looks way better from the ground.  There is no flight simulator out there now that look as good as MSFS 2024 from the ground.  This is how good MSFS 2024 looks from the ground, for an area that isn't even custom scenery (everything here is generated by the AI, the only thing that is custom handcrafted is possibly the hotel):

I don't think DCS World looks nearly as good as this from the ground. That explains why DCS World has a minimum requirement of an Intel Core i3 at 2.8 GHz.

Edited September 22, 2025Sep 22 by abrams_tank

I rejoined the beta.  Firstly, my PC is definitely running even more cooler and quieter than before, which is obviously good. 
I will post some quantitative results at a later date because I took some SU3 readings for CPU and GPU in a set scenario, which I will repeat in SU4 Beta to compare the difference.

On the sepia mask, I didn't seem to have a problem with it where I fly, so to me the night lighting is just the same, but I am genuinely pleased it is gone for those who were annoyed by it.

However...  I seemed to struggle to get the sim smooth at exactly the same settings as SU3 (where it was dead smooth and the best I have ever had in any sim), and I wasted about an hour on this. It was stuttering in all conditions.
Then I remember someone posted earlier about the frame limiter now being out.  So I fired up dev mode, brought up the frame rate display, and it was showing 29 for my setting of 30.

So I tweaked it to 31, and yahay! I got 30 back, and back to smoothness!  I run 60 actually with 2 x frame gen (which I had to turn off to see what was going on).  I can't go any higher anyway as it is the limit of my monitor at 4k resolution.
I am still not fully convinced by the accuracy of this, as it is showing a lot of decimals in the frame rate display, and it still doesn't seem to be as perfectly smooth as I had SU3 running, but it is not far off, and close enough for now.

Now if someone can answer me, how does a framerate slider that has been working perfectly well from, back to FSX actually, suddenly become messed up?

I started a very controversial thread many years ago after all of the regressions and seemingly random events in MSFS updates, called 'sack the saboteur', as I was concerned these were not accidental events, and with something like this, I am still concerned there is a mischievous Imp in the Asobo offices that enters the odd random number just for fun sometimes and to keep us on our heels. 

I would genuinely like to know the answer to this one at the next developer twitch session, so I might just post the question beforehand. 
Because, just as an insight, it would be great to know how stuff like this actually happens.  'Spaghetti coding' is used to often to justify it, and how a simple frame rate slider gets wrapped up in the 'spaghetti' baffles me. 

Also, can others confirm how this is affecting them, as I thought some had to set the slider at 35 to get 30, but on my PC it is only 31.  Strange.

Anyway, here's looking forward to the next beta release.  I am hoping they fix that slider, and hopefully the control sensitivity settings.

Edited September 22, 2025Sep 22 by bobcat999

PS.  I just fired up the excellent WB Sim C152, and I can confirm the dynamic registrations are working again.  Another good fix!

@TangoSierraMike  As well as the dynamic registration question you posted and I just answered, read my post above. 
I also though I had performance issues and stuttering as well until I traced it to things being out of sync.  So does this describe your issue as well?

Edited September 22, 2025Sep 22 by bobcat999

2 minutes ago, bobcat999 said:

Also, can others confirm how this is affecting them, as I thought some had to set the slider at 35 to get 30, but on my PC it is only 31.  Strange.

Yep official forums has a thread on it.