Take off out of KSTP. Head southeast toward KRGK. Once you get there, keep following the river east-southeast. You’ll know you’re in the right area if you pass a couple of very tall terrain bug spikes. Once past KRGK, if your system behaves like mine, your framerates will start to decrease. Before long, it’ll be a slideshow. Memory use will increase while this is happening, from a norm of 10-14g to 20+ gigs.
Anyone else able to replicate this issue at this location?
I couldn’t couldn’t repeat your results - flying the Robin Cap10 at about 1500 ft the whole way, my framerates stayed around 25, and memory usage went from 14.1 to 14.3GB during the course of the flight.
I’m having a similar issue, but not linked to location. Since SU4, half of my flights have the framerate gradually decrease to the point where it sits around 13-16 fps. Only difference is that for me, memory is not the problem. For you, it sounds like a memory leak.
Yeah, it definitely has all the earmarks of a memory leak on my end. It seems to be geographically based because there are some places that I can fly for hours without encountering any framerate issues or seeing the ram use spike unusually. Although it might just be something to do with larger (geographically) scenery areas, because most of the trouble-free places are islands like St. Barts where there’s a lot of empty ocean around to not tax the system. On the other hand, if I fly from St. Barts towards Florida, I start getting significant framerate issues over Puerto Rico, and that’s not exactly a huge landmass.
I had hoped that SU4 would address the problem, which started after SU3 was applied, but I guess I have to wait and hope for SU5 now.
There are a lot of threads about similiar memory leak issues. I had such one beginning in the south of france but then everywhere I fly. After some testing this and that I deleted my community folder and empty the rolling cache.
Issue’s gone! Haha, I thought, I am king, it was caused by the add-on’s. But thats very wrong. Right now I have all the add-on’s back in my community folder and … surprize … tata, isuue’s still gone.
It is beyond my horizon whats the true reason but deleting caches, exit msfs, delete community folder (save your add-on’s before) and restart msfs solve the issue here.
Yeah, I’ve seen that clearing the cache and community folders works for some people. Unfortunately, I’m not one of them. I’ve cleared the cache several times, and the community folder is empty. I’ve also tried various sizes of cache from 8gb to 64. Nothing makes a difference.
Having established the region just SE of KRGK as a reliable framerate killer I’ve done even more experimenting. It’s definitely, for me, geographically-based, but it’s almost as though I have to fly over a small trigger area, and then no matter what I do the memory use will increase and the framerate will degrade.
In the KRGK scenario case, it’s flying just over the river heading SE of RGK. If I fly north of the river, it doesn’t slow down. But if I turn around and then fly directly over the river back to RGK, it’s not long before I end up with a slideshow. Even north of the river where framerates were previously smooth, they will steadily drop if I ever flew over the river.
That got me wondering if it’s water-based, but that doesn’t make sense either because I can also get framerate drops in the Denver area, as well as Guatemala, even if there isn’t any water anywhere near me. I can also fly for hours in the St. Bart’s region without any framerate drops, despite being constantly over water there.
I think it’s instructive that @Mesaba1165337 couldn’t replicate it, as that seems to indicate it’s both location and individual system-based. Unfortunately, not being a software engineer, I’m unsure how to go about further troubleshooting to try and isolate the problem.
And to be clear, I’m convinced it’s not something wrong with my system, because the framerates were astonishingly smooth no matter where I flew before SU3. Even over somewhere dense like NYC or Los Angeles, while they’d get a little bit choppy it wasn’t bad, and the framerate drop reversed itself as soon as I flew away from the city center. Certainly over farm country like the KRGK area, it would always be smooth as glass, no exceptions.
I tried recreating your flight problem. I had my graphics settings very Ultra+. I took three frame rate samples using NVIDIA tools. The FPS rates were 13.0, 9.8, 8.5. GPU % utilization was 37.6, 31.5, 30.7. CPU % utilization was 17.9, 14.5, 14.5. I had to stop the flight because it was too slow. Memory utilization was 99% and Windows was swapping out large chunks of memory.
I stopped MSFS and rebooted the PC to clear memory. I set two graphics settings lower and flew the exact same flight. Again, three performance samples were taken. The FPS rates were 34.6, 32.2, 31.9. GPU % utilization was 96.6, 95.2, 95.1. CPU % utilization was 15.7, 14.9, 14.5. The flight was beautiful without stutters or pauses. Memory utilization was about 45% the entire flight.
Is there a problem with MSFS with frame rates are around 10 FPS? Is there a problem because CPU utilization dropped due to lower graphics parameters?
I agree absolutely to the guess its location related. The issues start in an very specific range of southern France for me but, and thats interesting, stays then in other, former “clean” locations.
So at least the trigger is probably location related. And its memory size independent, it’s just a matter of time to fill up even 64GB.
I guess it’s a real bug that cause this behavior after some mysterious triggering but the details are clearly beyond my horizon.