I have a i14900 64GB with GTX 4090 running in TAA no frame gen with everything else maxed out. At many airport/cities such as Seattle, JFK etc. when I fly the GPU runs at about 60%/<300 watts leading to a lower FPS. Other airport/cities such as Singapore etc. the GPU runs closer to 99% with higher FPS which I prefer. I use the same aircraft and settings to test. CPU is always at about 11-15% which is normal for this app. I would prefer it push the GPU more and be more consistent. Thoughts?
In doing some research it sounds like it effects airports that have FSLTL. Any way to completely disable FTLTL for those airports. I turned off live traffic in settings and it does not help.
Nevermind that wasn’t it as I never installed FTLTL.
I’m not sure what this comment means. Airports don’t have FSLTL.
FSLTL is a traffic injector with models. So, yes, a busy airport will have more FSLTL injected traffic, and it will put a much higher burden on your CPU.
FSLTL has a max aircraft count in it’s settings, among others. You can simply turn that down.
Also, from your earlier comment, you said you turned live traffic off. If you are using the FSLTL injector, you definitely don’t want live traffic on as well or both the sim and FSLTL will be injecting same/similar traffic, which will inevitably cause conflicts.
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Ok, in that case, it really just sounds like you are being CPU limited by the complex airports. They can bring any system down to its knees.
You options are decreasing TLOD or decreasing traffic.
I flew over Singapore it had tons of scenery and used the GPU at 99%. Why can’t the GPU be pushed to higher then 60% at other airports.
Because your CPU is now the bottleneck, and the GPU is idling waiting for the CPU to complete it’s tasks.
This is the telltale sign of highly complex airports, and/or lots of traffic, and/or high TLOD settings.
Understood but once I leave the busy airports why doesn’t the GPU ramp back up. It seems that if I start out at an Airport that has the low GPU usage it will stay low no matter where I fly. I don’t think the CPU is the bottle neck when away from a busy area. When I fly over Singapore there are a lot of objects and its very busy and the GPU stays at 99%
Not sure about those variables unfortunately. Maybe someone else has an idea.
No reason to “think” if its the cpu or not ^^ Activate devmode and the fps meter and look whats written in those situations.
I betits “Limited by mainthread”. What means it is the cpu that bottlenecks.
In that case, lower the terrainLOD and you will see your GPU load increase, because now the cpu has less to do = not bottlenecking = let gpu do its fps thing.
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Does raising or lowering the resolution affect the CPU or GPU more? Will raising the resolution increase the GPU usage?
If your GPU does hit 99% at times in the sim, even though other times it may fall to 60% and be CPU bound, that sounds like you’re fairly balanced. Scenes in FS can max out GPU and CPU at different times. Most you can hope for is spending about equal time bound by each. Different aspects of scenery and sim load CPU and GPU differently.
Also, things are about to change anyway. Supposedly 2024 will use more cores and should change this all up.
Tbh I’m quite surprised anyone can push a 4090 to 99% unless at 8k or on multiple screens/ VR, it really is such a beast. I imagine the places mentioned in the OP’s post must be highly detailed with high quality textures but a relatively simple mesh. Thus they would appear to be perfectly optimised, such a shame that can’t be said for everywhere.
I’m pushing a Dell 40" 5k2k monitor. A work around when I need it is use DLSS frame gen with TAA but it adds some sort of shimmering/flickering on scenery which I don’t like. I’ve flown over some really busy areas like Singapore and it pushes the GPU to 99% and I’ve flown over less complex areas and it goes to about 60% causing lower FPS. Makes no sense.
Makes plenty of sense,your gpu can’t render what the cpu doesn’t produce. Either there’s heavy cpu use or there’s nothing left to render and your gpu is idling … then fps should go up but maybe some kind of power saving is in operation
PS. Less complex to the eye can be very misleading, sometimes the opposite can be true