A330 extreme sim performance slowdowns

User Support Hub Install, Performance & Graphics
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ISSUE DESCRIPTION

Description of the issue: In the scope of the troubleshooting for the MT slowdowns after SU3 I stumbled across another issue seemingly affecting iniBuilds planes. Since this does also affect the default A330 this issue is relevant here.

During flight there are intermittent extreme slowdowns in the performance of the plane, while I usually can easily hold about 80-100FPS with FrameGen, the A330 in these moments drops the performance down to as lows as 20FPS with FrameGen.

This issue does happen repeatedly during flight and I can see in the WASM debug high execution times for the aircraft WASM module (more than 20ms in some cases)

FREQUENCY OF ISSUE

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

Every flight I tried this happens, but as shown only intermittently.

REPRODUCTION STEPS

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

  1. Fly the plane and monitor frames.

  2. Not 100% sure, but might be related to the sim loading? The issue seems to happen more often over PG areas.

The screenshots were taken just flying out of EGLL and departing east across the London area.

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: Thrustmaster Warthog and Crosswind Rudder pedals connected

[PC Only] Are you using Developer Mode or have you made any changes to it? Yes, but only for monitoring frames.

[PC Only] What GPU (Graphics Card) do you use? nVidia RTX 4090 Driver 581.08

[PC Only] What other relevant PC specs can you share? AMD 9800X3D CPU, 64GB RAM

MEDIA

Please add a screenshot or video of the issue occurring.

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Have you tried other aircraft and other areas, does it still happen? Does it seem similar to this current problem - Mainthread loads up more and more and doesn't recover

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Yea, I actually noticed it the first time with the ini A350 while testing in LSZH. Since that is an addon plane, I couldn’t really post it here of course :wink:

But I was just curious if it would be the same for their other planes. And actually it proved to be the case for the A330, which actually IS a default plane.

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Yeah, I’ve had similar in the default Max and 787. Interestingly, I found by turning off adaptive sync in monitor settings helped it become more stable. Then I just limited my fps to 60. I’m not noticing any tearing either. Not sure what the issue is tbh, SU3 has been a mixed bag so far.

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Alright, looks to be fixed by the SU4 beta which was released tonight. Roughly the same area is now running smoothly with much higher frames than even the old baseline.

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I think this issue might be back for me in the latest SU4 update

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ISSUE DESCRIPTION

A330-300 Performance is horrible where FPS starts at 100 drops to 20 back to 90 so on and so forth and stutters continue until I start my takeoff and climb. I did not test a330-200 but for example FENIX a320 does not have this problem nor does the heavy a350-900

Not even sure if other default airplanes became horrible like this… I will try to see what led to this maybe settings changing back and forth

FREQUENCY OF ISSUE

Always!

REPRODUCTION STEPS

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

  1. Start planned flight from overcast weather airport (a330-300 is a must)

  2. BATC with FSLTL OR AIG

  3. Progress the flight towards takeoff

YOUR SETTINGS

ULTRA all

4k res

DLSS 3X

Shadows 1024

traffic of parket and default AI aircraft is OFF

MEDIA

Please add a screenshot or video of the issue occurring.

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Today I also confirm a330-200, a350-1000 (I know it is 3rd party) but as you progress in a flight the FPS is garbage… manipulators latency spikes horribly. This was not even SU2 where I could do slews to move a flight. Now if you even think to do normal 1x rate flight the FPS drops to 9 FPS and no recovery. Sometimes wetaher flip live vs static can help.

Cannot believe how horrible performance is on SU3. Not even sure this is addressed in SU4 because we have no comments from MSFS2024 dev team and I am pretty sure theywill say user specific so this is going to be different.

1 Like
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Moved to User Support Hub since a solution has been marked and SU4 has been released.