Hi everyone!
I’ve recently upgraded to a new high-end setup and I’m trying to understand a few performance-related things in MSFS 2024. After switching to an AMD 9950X3D and RTX 5090, I configured the system so that MSFS runs only on the CCD cores with 3D V-Cache. Overall, things are working well, but I’ve noticed another strange problem on my new setup and wanted to see if anyone else is experiencing the same thing. I am in SU3 final.
At the start of a flight, performance is excellent:
• FPS is around 100 (limited in Nvidia control panel)
• Latency averages between 10 and 25 ms
• Settings are TAA + DLSS Frame Generation, mostly Ultra/High-End
• HAGS enabled, V-Sync disabled
But after a flight — especially when approaching a large airport — FPS suddenly drops by about 40–50%, for example from 100 down to 50–60 or more with traffic.
The weird part is that even after I land and end the flight, going back to the main menu, FPS stays low still. The only way to restore normal FPS is to completely restart MSFS, so I can’t do another flight from the last point.
Neither CPU nor GPU are fully loaded when this happens, so it doesn’t seem like a hardware bottleneck. It feels more like a memory leak or some internal issue within MSFS 2024.
Has anyone else experienced this? Is this a known issue? And are there any workarounds to avoid restarting the simulator after every long flight?
Thanks a lot for any advice or insights!