Turning off Fauna entirely has solved massive FPS drops in VR!

Bug Reporting Hub Virtual Reality (VR)
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1

ISSUE DESCRIPTION

Description of the issue:
Huge FPS drops depending on which direction I was looking in VR. It could drop from 55fps to 20fps. Thank you so much to whoever found this! You have rescued 2024 for me!

Did you experience this issue before you joined the Beta?
Yes

[PC Only] Did you remove all your community mods/add-ons? If yes, are you still experiencing the issue?
Yes

FREQUENCY OF ISSUE

All the time

How often does this occur for you (Example: Just once, every time on sim load, intermittently)?
All the time

REPRODUCTION STEPS

Please list clear steps you took in order to help our test team reproduce the same issue:

  1. Have Fauna turned on at any level (issue goes away when turned off)
  2. Take off from Edinburgh airport
  3. When airborne, say 2000ft, fly around looking in different directions

YOUR SETTINGS

If the issue still occurs with no mods and add-ons, please continue to report your issue. If not, please move this post to the User Support Hub.

What peripherals are you using, if relevant:
Alpha yoke, logitech pedals, Pimax Crystal

[PC Only] Are you using Developer Mode or have you made any changes to it?
No

[PC Only] Many issues may be due to an outdated graphics card. Please state your Graphics Card Driver Manufacturer (NVIDIA, Intel, AMD) and Version:
Nvidia RTX4080 572.16

[PC Only] What other relevant PC specs can you share?
5800x3d

MEDIA

Please add a screenshot or video of the issue occurring.

[END OF FIRST USER REPORT]

:loudspeaker: For anyone who wants to contribute on this issue, Click on the button below to use this template:

Do you have the same issue if you follow the OP’s steps to reproduce it?
•

Provide extra information to complete the original description of the issue:
•

If relevant, provide additional screenshots/video:
•

4 Likes
2

ISSUE DESCRIPTION

Description of the issue:
Among other issues I’m encountering in VR, I recently found that the performance suddenly dropped, also accompanied by a sound full of crackling noises.

In the video I’ve attached, you can see that, curiously, the effect is directional; it happens when looking to one side, but not only from inside the cabin, but also in the external view. Usually, this problem persists and finishes in a crash of the headset or the simulator.

I’ve tried many of the solutions suggested on this and other pages, and nothing seemed to work. Until today, I found something that, unexpectedly, seems to fix the issue: removing the fauna!

I still experience other performance issues in VR, but at least this seems to eliminate these strange directional drops.

[PC Only] Did you remove all your community mods/add-ons? If yes, are you still experiencing the issue? Yes, nothing in Community

FREQUENCY OF ISSUE

How often does this occur for you (Example: Just once, every time on sim load, intermittently)?
It used to happen once in a while, but recently I was almost unable to finish a flight due to this problem.

REPRODUCTION STEPS

Please list clear steps you took in order to help our test team reproduce the same issue:

Couldn’t say. Maybe when you fly near some fauna with the fauna options on?

YOUR SETTINGS

If the issue still occurs with no mods and add-ons, please continue to report your issue. If not, please move this post to the User Support Hub.
i9, 32GB RAM, RTX4080

What peripherals are you using, if relevant: Quest3, connected thuough Virtual Desktop with dedicated Wifi6 router

[PC Only] Are you using Developer Mode or have you made any changes to it? Yes, I had it active to be able to see the FPS overlay, but with no changes.

[PC, MSFS 2020 Only] Are you using DX11 or DX12?

[PC Only] Many issues may be due to an outdated graphics card. Please state your Graphics Card Driver Manufacturer (NVIDIA, Intel, AMD) and Version:
NVIDIA 572,16

[PC Only] What other relevant PC specs can you share?

MEDIA

Please add a screenshot or video of the issue occurring.

[END OF FIRST USER REPORT]

:loudspeaker: For anyone who wants to contribute on this issue, Click on the button below to use this template:

Do you have the same issue if you follow the OP’s steps to reproduce it?
•

Provide extra information to complete the original description of the issue:
•

If relevant, provide additional screenshots/video:
•

3 Likes
3

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:
• may be related to latest nvidia dlss4 driver release as I didn’t notice this issue until updating to the dlss4 nvidia driver release.

If relevant, provide additional screenshots/video:
•

4

Screenshot_20241231_161342_YouTube
Screenshot_20241231_161342_YouTube1600×720 85.1 KB

1 Like
5

This solved my massive FPS drops which I had every time a couple of minutes after departure.

Thanks a lot!!!

1 Like
6

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:

Whenever some type of fauna comes into view, fps drops heavily. This is not happening when fauna is off in settings.

1 Like
7

Turning fauna and HAGS off has fix about 85 percent of all performance stutters for me. Fauna help with some of the random out of no where stutters that didnt make sense.

2 Likes
8

Who could have predicted that simulating a whole bunch of animals would be a liability to performance in a flight simulator? :slight_smile:

1 Like
9

Does this also apply to NON VR flights?

10

Since you are playing on a laptop, disabling fauna may have a positive impact on your FPS. However, as every system behaves differently, I cannot predict the exact effect. I recommend testing it yourself to determine whether this setting improves MSFS performance on your laptop.

1 Like
11

Alright thanks. I’ll give it a try.

12

I expect that it does, but shows more in VR due to the higher load

13

What a sorry state of affairs were you have to turn features off in order to get mediocre performance, Asobo seriously needs to improve the game engines performance, especially for us vr users

5 Likes
14

Hello,
Thank you so much for your feedback! I had been looking for the problem for weeks, and this solved it in one click.
Bravo
I hope that Microsoft will do the necessary one day, but for the moment I will use the simulator without the fauna !
Have a nice day

2 Likes
15

Someone said that also turning HAGS off can solve the same problem, anybody to confirm? I cannot test until the weekend. Thanks.

16

For me doing both has fixed it for me.

17

Do you have the same issue if you follow the OP’s steps to reproduce it?

• Two weeks ago, I started up in MSFS 2024 and after only a few minutes of flying I experienced severe stuttering both audio and graphics. Took my headset off (Quest 2) and noted all appeared ok in flat screen mode but as soon as returned to VR it was there again.

Provide extra information to complete the original description of the issue:

• Performed a clean reinstall of MSFS 2024. To my delight this worked and MSFS was now OK in VR. however this only lasted for about 20 minutes before the stuttering slowly began to return (not micro stutters but major) until it was so bad that the sim was impossible to use. I noticed that the stuttering varied in intensity depending on where I was looking i.e. to the side or in front.

Followed others advice I switched ‘fauna’ to ‘off’ and this appears to have corrected the issue for now. My suspicion is that due to the timing of this issue it may be related to the recent Nvidia driver updates. I am presently on ver. 572.42 and previously on 572.16. MSFS 2024 appeared OK in VR prior to these two driver upgrades when I was on 566.xx

If relevant, provide additional screenshots/video:
•

18

Wow this fixed my performance issues, with deactivated fauna I finally get a smooth and consistent framerate

2 Likes
19

Great finding. Is there a way these reports can reach Asobo devs?
Atm driver <566.xx + Fauna = OK; 572.xx + Fauna = KO
Whose next move is going to be? Asobo? NVidia?
The fact that it only affects VR worries me a lot.

2 Likes
20

The trees where my only problem, they seem far more dense than even in real life (flying over my own town).

I have everything on Ultra except for trees, it’s the only setting I had to turn down to medium.