I've posted before about problems I've been having flying into London in the Fenix A320. Sometimes it's stable and fine, other times frames go to single digits and I just can't fly it at all.

Sunday I flew DUB-LHR (Fenix A320, iniBuilds EGLL, Orbx London landmarks, FSLTL) - frames held steady throughout the approach and landing
Monday I flew LHR-ATH-LHR (Fenix A320, iniBuilds EGLL, Orbx London landmarks, FSLTL) - frames went through the floor on approach and I had to abandon it
Yesterday after uninstalling Orbx London landmarks, I flew CAI-LHR (FBW A320N, iniBuilds EGLL, FSLTL) - frames were broadly good on approach
Today I flew LHR-NCE-LHR (Fenix A320, iniBuilds EGLL, FSLTL) - frames went through the floor on approach and I had to abandon it

On departure from LHR in all flights, frames are good. It just appears to be return journeys (departing LHR, landing somewhere else, flying back to LHR) that pose a problem. 

I've taken my settings down, unstalled Orbx London Landmarks, turned off FSLTL during my last approach when I could feel frames were dropping, but still it becomes totally unflyable.

London is my home airport, and I fly a lot of BA routes, so the idea that I can't fly from here would destroy my love for flight simming. Could there be an issue with return journeys back to LHR? I've put my system specs in my signature. My sim settings are here https://imgur.com/a/MxcShP9

are you restarting the sim or starting a new flight for the return leg?

If not, perhaps it could help

I can easily leave 1 flightsim session alive for many many hours but at some point my Gfx card will just fall asleep. when i look at task manager performance it will show as almost inactive.

7 minutes ago, avhpilot said:

are you restarting the sim or starting a new flight for the return leg?

If not, perhaps it could help

I can easily leave 1 flightsim session alive for many many hours but at some point my Gfx card will just fall asleep. when i look at task manager performance it will show as almost inactive.

I was doing a 1.5hr flight out to Nice and then straight back, I didn't restart the sim. Surely there should be a way for it to be able to do a three hour round trip?

17 minutes ago, BWBriscoe said:

I was doing a 1.5hr flight out to Nice and then straight back, I didn't restart the sim. Surely there should be a way for it to be able to do a three hour round trip?

I do this all the time in the PMDG. I will fly legs all day without restarting and never had a problem. I do own the Fenix but I have not flown it yet but I find myself wondering if this happens if you fly legs to other places and avoid London. Spend the day doing something like Rome-Berlin-Rome-Faro or any combo that you fancy and see if the same happens.

I'd be curious if it's something about that area that is your problem. Perhaps some scenery issue or the way the Fenix is handling Navdata there ot perhaps the Navdata itself. Who knows. Worth a try.

Fact is, you really shouldn't need to be restarting after every leg. I know people advise it and it used to be sound advice but I don't believe it's necessary in this sim.

 

Edited February 1, 20233 yr by Jazz

Perhaps for the sake of science, the OP could try to restart at each destination and report back, just so that we don't have to speculate about whether it's a factor.

Just now, jrw4 said:

Perhaps for the sake of science, the OP could try to restart at each destination and report back, just so that we don't have to speculate about whether it's a factor.

My single trips DUB-LHR and CAI-LHR have not showed the same as a return trip, so I think I've already done a restart at destination.

Thanks. Other than that, I guess the obvious thing is to try something like a PMDG 737 or maybe the a310 if you have one of these available on a return trip. I'm just trying to isolate the problem......

Your 9900K ought to be fine at 5.0Ghz--just noticed your 3.6 in your sig.   Is it possible you're nowhere near that with how it's setup?  That's #1 as the sim is going to be CPU limited though your GPU isn't top shelf.  My 9900K runs all cores at 5Ghz w/ very cool temps.   Since you've re-ventured back into MSFS, with chief complaints centered around performance most often, what the heck are you loading up your system w/ the most intense planes and adding as much scenery as your wallet can afford?  Declutter the sucker until you have rock solid performance corroborated using CapFrameX and the onboard DevMode OSD to help pinpoint where issues are.  Then, when all's really well, judiciously add back features and evaluate their impact.

1 hour ago, BWBriscoe said:

London is my home airport, and I fly a lot of BA routes, so the idea that I can't fly from here would destroy my love for flight simming

I'm flying for Lufthansa now, and fly between Frankfurt and London regularly, now in the FBW A320NX & PMDG 738 with no problems whatsoever w/ performance, in fact no performance problems anywhere on planet earth.   Fenix is known for being very hard on hardware, more so than PMDG 737 series for certain from all I read.

3 minutes ago, Noel said:

Your 9900K ought to be fine at 5.0Ghz--just noticed your 3.6 in your sig.   Is it possible you're nowhere near that with how it's setup?  That's #1 as the sim is going to be CPU limited though your GPU isn't top shelf.  My 9900K runs all cores at 5Ghz w/ very cool temps.   Since you've re-ventured back into MSFS, with chief complaints centered around performance most often, what the heck are you loading up your system w/ the most intense planes and adding as much scenery as your wallet can afford?  Declutter the sucker until you have rock solid performance corroborated using CapFrameX and the onboard DevMode OSD to help pinpoint where issues are.  Then, when all's really well, judiciously add back features and evaluate their impact.

 

Should I be looking to push my CPU to 5.0Ghz? Could you point me in the direction on where I can find out how to do that?

10 minutes ago, BWBriscoe said:

Should I be looking to push my CPU to 5.0Ghz? Could you point me in the direction on where I can find out how to do that?

The 9900K is an awesome processor in its own right and half of that is how overclocking friendly it is.

What is your brand/model of mainboard?

Lower settings to medium or low - Problem solved. 

6 minutes ago, Noel said:

The 9900K is an awesome processor in its own right and half of that is how overclocking friendly it is.

What is your brand/model of mainboard?

I've got:
BaseBoard Manufacturer    ASUSTeK COMPUTER INC.
BaseBoard Product    TUF Z390-PLUS GAMING
 

1 minute ago, Ricardo41 said:

Lower settings to medium or low - Problem solved. 

Given that the problem isn't always there it seems that's unlikely to be the cause, don't you think?

50 minutes ago, BWBriscoe said:

I've got:
BaseBoard Manufacturer    ASUSTeK COMPUTER INC.
BaseBoard Product    TUF Z390-PLUS GAMING
 

Start here and do some research on your own as well and take your time.  It's not as difficult as it might seem just go line by line in the BIOS with one of these online video guides: 

ASUS Z390 Quick Overclocking Guide | i7 - i9 | 8700K - 8086K - 9700K - 9900K - YouTube

Z390 & 9th Gen CPUs Step by step, in depth overclocking guide for 9900K, 9700K, 9600K - YouTube

I want to reiterate if your CPU is only getting up to 3.6-4.0Ghz it's missing a full 20+% of critically needed performance.

Edited February 1, 20233 yr by Noel

2 hours ago, BWBriscoe said:

I was doing a 1.5hr flight out to Nice and then straight back, I didn't restart the sim.

This is definitely the issue.  There are many reports of degrading performance in MSFS over time.  I can almost guarantee that if you restarted MSFS after your first leg, then completed your second leg, you'd have dramatically better performance.

Seems like some sort of memory leak over time, but yes, it's very real.