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Hello iniBuilds team, I have now completed three full ultra‑long haul flights on the A350 in MSFS 2024 to identify the cause of severe FPS drops. My config: i7‑12700K RTX 4070 12 GB VRAM 64 GB DDR5 RAM All on SSD Test 1 – SIN–JFK (Cabin ON) Flight time: 18h10 Start of flight: Smooth, >40 FPS After ~12–14 hours: FPS drop becomes noticeable Landing: ~20 FPS Arrival: Simulator crashed upon arrival at gate Test 2 – SIN–JFK (Cabin ON, second try) Flight time: 18h20 Same pattern: Smooth start, FPS drop after ~12-15 hours Arrival: Simulator crashed on touchdown Test 3 – JFK–SIN (Cabin OFF) Flight time: 18h00 Entire flight: FPS stable from start to finish Landing: No stutter, no FPS drop, no issues at all Same settings, same weather, only cabin disabled I was able to finish my 18-hour flight between New York and Singapore without any issues. Conclusion Across all the flights, the A350 cabin seems to be the primary cause of performance degradation on ultra‑long flights and I'm also assuming on 7h or 11h flights too. Other addons I use (PMDG 777, Fenix A320, FSLabs A32X) all with detailed cabins and visible passengers (GSX) remain stable no matter the duration of the flight. Suggestion Possible Causes (from user observation) Dynamic memory build‑up: Cabin textures and geometry remain loaded in high detail for the entire flight instead of unloading/reducing when not visible. Cabin scripts/animations: Possible constant processing of animations, lighting, or passenger logic even when not visible. No purge of unused assets: Galley, toilets, and rear cabin sections likely remain active in memory through the flight. Potential MSFS sensitivity: The sim engine seems more sensitive to heavy, complex interior models (LOD handling differences vs PMDG/Fenix). Suggestions for Optimisation Dynamic Cabin LOD Reduce cabin texture resolution and polygon count automatically in cruise. Apply aggressive LOD to hidden areas not visible from cockpit or exterior view. Memory Purge in Cruise Automatically unload unused cabin assets during cruise (rear galleys, certain textures). Reload before descent if needed. Cabin Lite Mode in EFB Option for simplified cabin model for long-haul flights. Keeps functionality but lowers GPU/VRAM load significantly. Light/Animation Optimisation Disable or simplify certain cabin lighting and animations during cruise to reduce processing overhead. General Memory Management for Long Flights Monitor and clear memory build‑up during extended sessions, similar to how PMDG, Fenix, and FSLabs manage long-haul stability. Why this matters This isn’t only for 18h flights like SIN–JFK — better cabin optimisation would improve stability on all long-haul flights (>6h) and ensure that even powerful PCs don’t suffer progressive FPS loss. Otherwise, the plane is very realistic and cool. I have a friend who is a co‑pilot on the A350 and he confirms it. Of course, there are still some updates to come, but I love flying the A350, and those 18 hours were amazing! Thank you for your work on this aircraft, I hope these tests and suggestions help improve long-haul performance.

Hello Inibuilds team, I fly on MSFS 2024 with this config QHD 1440p (i7‑12700K, RTX 4070 12 GB VRAM, 64 GB DDR5 RAM, all on SSD). Despite this, the iniBuilds A350 experiences severe FPS drops during long‑haul flights SIN–JFK 18h20. That I did twice, At the start of the flight everything runs smoothly, but over the hours performance steadily decreases, and by landing I can drop below 20 FPS, causing the simulator to crash when I land in New York. With other addons such as PMDG 777, Fenix A320 or FSLabs, I can fly 1h-8h-14h or more without any FPS issues. This clearly shows the issue is related to the A350’s optimisation on MSFS. I should point out that on flights between New York and Europe, or California to Europe (and vice versa), I have no issues. From what I’ve observed, FPS degradation becomes significant after around 12 hours of flight, maybe even a bit earlier. I’ve done Paris–Los Angeles without any problems. However, I really think this A350 needs to be properly optimised once and for all, because it’s honestly not enjoyable to fly something like Singapore New York. Once the flight is over, I close MSFS 2024, reload the aircraft at New York, and all my FPS come back and everything is ultra smooth again. I don’t know exactly what happens during the flight I’m not a developer but clearly something is going on. I’m not trying to make comparisons, but I flew Houston–Auckland with the PMDG 777-300ER last week, which was a 14‑hour flight, and it was 100% smooth with absolutely no FPS issues from start to finish. I’m just surprised why some developers struggle to optimise their aircraft when others are excellent in this area. And finally, I want to point out once again that I haven’t noticed any FPS loss on flights between Europe and New York, or Europe to Vancouver, Los Angeles, or San Francisco. I honestly think the A350 itself starts to saturate after maybe 12–13 hours of flight, though I don’t know exactly when. It’s an aircraft I love, so I would really like to be able to fly Singapore to New York without my simulator crashing either when I touch down or when I arrive at the gate. For now, I’ll stop doing ultra‑long flights and wait for your updates. I’ve included screenshots of my flight with my FPS. I don’t know if this can help you improve the A350. As I mentioned, I’m not a developer I’m just reporting what I observe, and you can also see my flight time in the pictures. The pictures are lower quality because I had to reduce their size in order to upload them, otherwise I wouldn’t have been able to attach them. Thank you.

Hello I just wanted to ask if you are currently working on the A330, and if there might be a major update planned to make it closer to the real aircraft. I know you’re busy with the A350, which I really enjoy flying, but I also love the A330 and feel there’s still a lot of work to do on this aircraft. Thank you.

Hello everyone ! I think everyone knows that Aerosoft won't release its A330 on MSFS but on MSFS 2024, which is ridiculous, anyway for me Aerosoft are the worst, on FSX and P3D it was the same, for me, Aerosoft are only good when they create airports, their planes are terrible. SO I was wondering if Inibluild had in mind to create an A330 GE & RR because the A300F is very good !