Revisit higher sim rate (SU4 Performance Boost)

[Speedbird193]

I'm on the SU4 beta and the ini A350 is finally flyable as I now get an incredible 80-90 FPS (post FG) even in EGLL with detailed custom cabin and BATC at traffic level 10. Previously I couldn't get more than 30 FPS in the same scenario. Many people are reporting similar performance boosts from SU4.

Considering the reason that was previously given for not supporting sim rate >4x was "no system can handle that" - can this please be revisited? I'm still not using this plane as I don't have time to fly 12+ hours at 4x only. Other developers offer 8x and even 16x and they run perfectly fine on my system - even pre SU4. I could finally start using the A350 if there was an option for at least 8x sim rate, let the user decide if their system can "handle" it rather than not even offer it.

[frank_m]

I had never a problem with 8x, even before SU3. Ryzen7900 and RTX4080. 

Edited September 12 by frank_m

[Speedbird193]

44 minutes ago, frank_m said:

I had never a problem with 8x, even before SU3. Ryzen7900 and RTX4080. 

There is no 8x in the EFB. And as far as I’m aware, using the sim’s native key bind 8x doesn’t adjust fuel burn etc so it’s all way off when you arrive.

[frank_m]

That has already been fixed several revisions before. 

[Speedbird193]

14 hours ago, frank_m said:

That has already been fixed several revisions before. 

Which update was that? I don’t recall seeing anything about that.

[frank_m]

1.0.5 or something? I'm using it for a long time now. 

[Speedbird193]

On 9/13/2025 at 7:20 PM, frank_m said:

1.0.5 or something? I'm using it for a long time now. 

I just did a test and unfortunately fuel burn for anything above 4x is wrong. I flew for 10 minutes on a straight heading, no wind with 4x (native via OIS) and 8x (via key bind and indicated as 8x in the OIS). Fuel burned after 10 minutes for 4x was 1,600kg, fuel burned after 10 minutes for 8x was 800kg. This proves that fuel burn doesn't work beyond 4x and you will arrive with incorrect FOB.

ini - any plans to fix this? My sim and the 350 ran absolutely fine using 8x via key bind (I could even use 16x without any system issues or stutters). Would be nice to either get native support for 8x/16x or at least correct fuel burn so we can enable it via key bind.

Edited Wednesday at 02:08 PM by Speedbird193

[CaptainSim]

Fully agree to @Speedbird193. I do not have the time to have a long distance flight on sim rate 4x. 8x or even 16x is def. needed! Also is there a way to control thr sim rate without the ois? Doing this here is also a pain. I am on xbox btw and there it is a real navigation desaster. Thx

[Eddie]

Hello,

Will bring this up to the team and we'll see what can be done. No promises however 🙂

Thank you