FPS reduction over time

I had it happen again to me yesterday evening in the 747-8. I turned off live traffic to get the frames back and then turned live traffic back on. I had no further frame loss after that.

I’ve been experiencing something similar on the Xbox Series X. For me, it’s a gradual decline in performance that starts as I begin to descend, with things becoming more juddery as I get closer to the ground. It happens irrespective of aircraft or airport.

Strangely, if I spawn into the same area by just selecting an arrival destination from the world map, or use the travel to function during a long flight, then I don’t seem to have the same problem and things remain nice and smooth - even over busy airports.

I rarely do flights that are over an hour. The longest I’ve done recently is a 90 min flight in the CJ4. Plus, I have 64GB in my system, so if it was a memory leak, it would take me longer to see its effects.

Perhaps sharing info like what planes you’re flying, system RAM you have, etc would be beneficial, because it really does sound like a memory leak issue.

Are your CPU and GPU temps fine? Performance could degrade over time if they heat up to much.

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Do you have any form of AI traffic turned on? Real air traffic? AI offline traffic? Static aircraft AI? If so, over time the sim might get slower since more of those AI planes get loaded in throughout duration of the flight. Personally I was having freezes when descending in the 787 into LAX. The closer to the ground, the stuttering and freezing increased. When I turned off real/offline AI traffic and multiplayer, it was smooth again.

See this thread:

I have the same problem too in the Flybywire A32NX, the departure is very smooth, then the performance degrades as I descend. The performance at the arrival airport is quite bad. When I depart from that same airport the performance is fine :thinking:

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For me, it was the live traffic bug. Turning it off and back on fixes it for me.

My cpu usage is very low running between 2-4%. :confused:
During flight my game froze momentarily and then frame rate dipped from around 24Fps to 17-18Fps and cpu usage went from around 20% to 1-4%. Very strange :confused:

Playing on High Settings in 1440P 144Hz resolution.

7980XE@4.7Ghz
GTX 970 Stock
64GB DDR4 3800Mhz CL17

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Yea it’s true sad

If you have to turn traffic on and off…its most likely a memory leak😔

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After 6.5+ hours of flight I noticed the redction while being close to land. I recorded the after land FPS at parking and went back to main menu returned to the same location and went back to the normal FPS in high-end configuration

The video showing this: MSFS 2020 Sim Update HotFix2 - FPS reduction after some hours of flight, still happening - YouTube

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Pff so not cool can we do something about that?:pensive:

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Nope not really.
Memory leaks are a thing caused by errors in the program code.

The only and the best thing you can do is report this issue to the Zendesk.

https://flightsimulator.zendesk.com/hc/en-us/requests/new

Kind regards,

Mark

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Hmmm I see thx

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I have applied the suggestion from @gordongreig and really worked out. I saw some other people mentioned it also in other posts.

The reduction was around 2 FPS at most which is a big change vs the original scenario.

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What’s the suggestion?

This is what I did (I forgot to link the original post on the other thread :slightly_smiling_face: ): and I tested as mentioned in the following post:

I don’t use any AI at all and I’m still seeing this issue albeit intermittently.
FPS drop off at destination airport but doesnt ever go back up.
Is anyone else who doesn’t use AI getting the same issue!?
I’ll start at one airport with fps of 50 and land with FPS of 32.

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Yes I’m seeing this quite consistently on the Xbox Series X version - particularly on bigger airliners. Everything starts to get a bit juddery as I descend below 5000 feet and then stutters around until touchdown. I have tried turning ai traffic and live weather off but neither seem to make much difference.

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