Framerate gradually reducing over time : anyone ?

[Fielder 3,810]

It almost sounds as if the rolling cache isn't rolling along ahead of the flight correctly. As if the cache controller knows where the flight is now but still can't function correctly and just sort of goes into a sputter loop trying to function.

 

 

[omarsmak30 4,069]

Yeah this annoying issue is somewhat being introduced after the UK update whereby when you reach your destination, the fps decreased a lot, I am not sure but I guess it maybe related to the memory issues? Anyway, you dont need to even restart the sim, if you try to re-load the aircraft from the dev menu, the fps bounces back.

[fppilot 4,439]

I find this discussion interesting as I have been since about the first of the year  been experiencing an issue that occurs between 1 1/2 hours and 2 hours in flights.  All of my MSFS flights are in GA, notably the DA62, G36, G58, Mooney, and both versions of the Cessna 172.  What I experience is that the G1000 and the GNS GPS's lock or freeze on me.  Its like clockwork.  If I have thought to save a flight while enroute I seem to be able to reload and resume the flight to completion about 60% to 70% of the time.  Doesn't happen 30 minutes, 45 minutes, an hour into the flights.  Usually only after 1 1/2 hours and typically nearing 2 hours.  I do not experience frame rate issues.  Just the G1000 PFS/MFD or GNS locks up.  I am able to continue most G1000 equipped flights with the backup gauges.  But the entire panel locks up in the 172 legacy model.

[GSalden 4,719]

This reduction of framerate over time I remarked because I use 2x 4K. Would I have been using 1x 4K the framerate surely would have been above 30. Then I wouldn’t even know that this issue existed.

Perhaps more of you are suffering from this but have the franerate locked to 30 and the reduction stays above 30 because of your hardware/settings. So you also don’t notice it as your system is having enough headroom at startup.

You can try with Unlimited and see what happens. Make a 1,5+ h flight and see what framerate you have at arrival. 
Then shutdown MSFS and restart it. Go to the airport you arrived a few minutes earlier and see you framerate.

If you use a locked framerate you can set your settings higher and see if the framerate gets below the locked value over time.

In P3Dv5 I can fly for 3-4h with nigh/maxed settings (high load on the hardware) and EA and do not experience this. 

Perhaps this is really an issue with MSFS and together we can find out. Then a Zendesk ticket might help...

 

 

Edited April 23, 2021 by GSalden

[GSalden 4,719]

Sent a support ticket to Zendesk. If they give me a reply I will post it in this thread.

Thanks all 👍

[mucflyer 8]

Changing the server ingame, should solve right away most of the unusual stutters/pauses and cockpit freezes! Asobo is aware of this bug triggered by a custom livery from a multiplayer plane in your vicinity which you do not have in your community folder. If i understand correctly...

So if you encounter those stutters, go with escape to your upper right xbox account and switch your server for example from west europe to north europe. Even a slower US server helps out if you stays in Europe. 

 

[GSalden 4,719]

1 hour ago, mucflyer said:

Changing the server ingame, should solve right away most of the unusual stutters/pauses and cockpit freezes! Asobo is aware of this bug triggered by a custom livery from a multiplayer plane in your vicinity which you do not have in your community folder. If i understand correctly...

So if you encounter those stutters, go with escape to your upper right xbox account and switch your server for example from west europe to north europe. Even a slower US server helps out if you stays in Europe. 

 

Sorry to say, but this is about framerate reduction over time. Not about stutters or freezes.

[eslader 1,822]

I can't figure out a pattern to it. Sometimes if I push through the reduced framerates far enough, I'll come out the other side and frames will pick up again. I did a flight a couple weeks ago that overflew KFLL heading toward the eastern Caribbean. Framerates started getting bad as I approached the eastern Florida coast, got progressively worse, and got to peak low over the Bahamas. Then they started getting better, until by the time I'd gotten east of Puerto Rico everything was fine again.

 

After that I've been doing some experimenting and have found a number of places south and west of the eastern Caribbean that trigger this. Since I started checking, they have always been associated with extreme increases in ram use - usually the sim hovers between 4 and 5 gigs, but when the framerates start dropping it goes well past 10, and sometimes higher than 20, with stuttering starting around 11 or 12.

Now here's the weird part: Usually I get impatient and close the sim at the slideshow part because I have better things to do. But I pushed through this time just to see what would happen. I'm doing a flight right now that started out with good framerates, and degraded as I flew north, down to a slide show as I got about in the middle of Colombia. And as usual, ram use was up at around 17.5 gigs. But as I flew into Venezuela, the ram use started dropping. I'm down to 6.7 now, which is usually associated with smooth framerates, but it's just as bad of a slideshow as it was back at 17+. 

It just doesn't make sense. 

Edited April 23, 2021 by eslader

[Noel 4,572]

6 minutes ago, eslader said:

I can't figure out a pattern to it...It just doesn't make sense. 

We're currently running the SNAFU edition and this is why I laugh when people here speak with even a hinit of authority about what's wrong and what fixes it.   I have had crippling frame rates upon approach to nothing airports that formerly I could do w/o a sweat.  I did, finally, end up having a totally smooth flight into KSBA for a procedural ILS landing in the Citation L.  It took dialing back many settings to High from previously where Ultra was the norm no problem.  The new part is that up until WU3/4 always I could count on GPU or CPU load to predict when my vsyncd 30fps might start to struggle, and then it was easy to just dial back a few of the right sliders and all would be well, and predicatable.  Now I can see lots of headroom left in the CPU and GPU yet get this frame rate drops--but as I say, they did get fixed or improved well w/ lower settings, and they weren't low enough to degrade IQ per se.

[wim123 765]

9 hours ago, GSalden said:

Sorry to say, but this is about framerate reduction over time. Not about stutters or freezes.

have you tried flying without any cache on?

[GSalden 4,719]

6 hours ago, wim123 said:

have you tried flying without any cache on?

No, I haven’t.

Cleaned up the rolling cache and now have it set to 60 Gb where before I had it set to 50 Gb.

Someone also using Prosim took put the Prosim WASM module and fles for 2h with no framerate drop. Surely several features do not work.

Which features are being controlled by a WASM module I do not know. Animations and lights perhaps ?

Someone knows ?

[Nyxx 6,994]

I have turned off cache a long time ago. Its worth a try. I find zero probelms with it off.

Edited April 24, 2021 by Nyxx

[Virtual Flight Realm 29]

On 4/23/2021 at 6:21 AM, GSalden said:

This reduction of framerate over time I remarked because I use 2x 4K. Would I have been using 1x 4K the framerate surely would have been above 30. Then I wouldn’t even know that this issue existed.

Perhaps more of you are suffering from this but have the franerate locked to 30 and the reduction stays above 30 because of your hardware/settings. So you also don’t notice it as your system is having enough headroom at startup.

You can try with Unlimited and see what happens. Make a 1,5+ h flight and see what framerate you have at arrival. 
Then shutdown MSFS and restart it. Go to the airport you arrived a few minutes earlier and see you framerate.

If you use a locked framerate you can set your settings higher and see if the framerate gets below the locked value over time.

In P3Dv5 I can fly for 3-4h with nigh/maxed settings (high load on the hardware) and EA and do not experience this. 

Perhaps this is really an issue with MSFS and together we can find out. Then a Zendesk ticket might help...

 

 

Same issue linked with a bounce of ram usage with versatility on the same scenery...

[GSalden 4,719]

1 hour ago, Nyxx said:

I have turned off cache a long time ago. Its worth a try. I find zero probelms with it off.

Just tried with no cache and the outcome is the same: framerate reduction over time especially noticible when descending and approach.

[Nyxx 6,994]

Did you delete your cache first?