Hi MSFS/Asobo team, we just tried the SU15 beta (1.37.12.0) but we get a serious framerate issue with our in development plane. With SU14, we get 86fps, but we only have 71fps with SU15. We developing the plane with WASM. We also tested pmdg and fenix, these 2 planes also lost fps. At SU14 Fenix = 86fps, pmdg = 87fps, at SU15 Fenix = 76fps, pmdg = 79fps. I’m not sure if only my pc have this issue, any good ideas? I thought to post this before SU15 gets released in the case that this is caused by a bug, or was there any changes that we need to know about so that we can make the required changes?
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Hi,
Is MS/Asobo going to do anything about this heavy frame rate lose?
I just tried 1.37.17.0 and it is still the same.
Hi,
Some big changes has been made on Wasm for SU15 (stack overflow detection, decommit memory) but we are not aware that those changes could reduce Framerate that much.
Can you provide us with some data about Wasm execution time between SU14 and SU15 (in the same condition : same plane, same version…) using the Wasm Debug Window :
In SU15 build, can you also provide us with the Decommit Duration data that you can find at the bottom of this window :
Thanks for pointing out that issue
Best Regards
Maxime / Asobo
I had a massive hit on frame rates in SU15 also. I updated my nVidia driver and it went away completely. Check your drivers. It ‘might’ be that.
Hi Maxime, the build 1.37.18.0 released today fixed the problem. Thanks!
I can also confirm that the build 1.37.18.0 released today fixed the issue for me, even improved performance a little bit with about extra 2-5fps.
Thank you!
@CheerierAmoeba1, @JannieR2007,
May I ask which platform you are running your tests on? Store version, Steam version or Xbox?
Best regards,
Eric / Asobo
Hi Eric,
We are both on the MS Store version.
Hi Eric,
Did you guys inserted again that GDK update that was removed last minute before SU15 was released with build 1.37.18.0?
This build 1.37.19.0 is again giving huge frame rate drop issues, I am experiencing around 15-20fps drop again.
In pmdg 737 I was getting yesterday morning 100 - 102fps (frame gen = disabled) before this build 1.37.19.0 was released.
Now I get 82-85fps.
Our in development aircraft gave me 72-74 fps yesterday morning with build 1.37.18.0.
Now I get 65-68fps with this build 1.37.19.0
Hi @JannieR2007,
No the GDK shouldn’t have changed between 1.37.18.0 and 1.37.19.0 - I’ll have to review the changelists that made it into this new version but as far as I know nothing should have affected the performance of your aircraft.
When timing the performance of your aircraft, are you spawning over the ocean to make sure nothing else could be affecting performance (such as scenery loading)?
Best regards,
Eric / Asobo
Hi Eric,
Everyone on our team noticed immediately the performance hit when they started working today and the uodate installed for them.
I actually did a performance test yesterday morning with various aircraft to gauge where we need to improve.
I have a very specific test scenario that I repeat.
It is a vanilla installation of MSFS, no addons except the aircraft I want to test performance against. There is no world or city updates installed. Vanilla installation of 1.37.18.0.
Position, time, date, settings are all the same for the test.
And I noticed a 15-20fps hit with 1.37.19.0.
Some of my colleagues who has less powerfull hardware then me went from 70 to 50fps, the other from 50 to 30fps.
I am running i9-13900K @ 5.5GHz (no overclocking), RTX 4090, 32GB DDR 5 6400MHz CL30.
Something was done in build 1.37.19.0 that gives the same performance hit the GDK update did that was removed in 1.37.18.0
Up to build 1.37.17.0 there was this same 15-20fps performance hit.