The Digital Foundry video was a significant help. It gave me a new way to approach the ongoing need to optimize settings. I think my rig is around the median for this forum – 5800X, 3080, and 64GB of 3600 RAM – but using methods in that video, I discovered that at 1440 I have a great deal of headroom. Thanks for the reference; it’s a year old but extremely educational.
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Good to hear!!
You know what it is with those graphics settings.
You can’t see the forest for the trees.
This makes it hard to understand and thus approach things.
I’m glad this has helped you forward!!
Cheers Mark
That should be marked as solution and the thread should be closed.
Thanks for that. I still have some hope for the community.
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How is everyone benchmarking this? I have been looking at performance in the experimental FBW when in the cockpit. Probably if I flew the default cessna in spot view my FPS would fine as well
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Soon cripples when using the bigger aircraft, as you say the small airplanes its fine. Also are people doing it whilst flying in the air which again will be fine. Try an a320 at heathrow see what it does then…
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Strange, almost got the same setup, but am far from your performance (when i set the same settings like you)
The main thread is the main render thread for DX11. The way DX11 works, there’s one thread that handles most tasks, with a few secondary threads. Once that main thread hits 100%, the secondary threads are limited and you effectively have a bottleneck. It’s like having 5 people performing work, with one person delegating the tasks.
This is largely a limitation of the DX11 rendering pipeline. Having a high single-core boosting frequency will help, but you’ll still be somewhat limited. Even on my Ryzen 5950x with a 5 Ghz single-core frequency, I’m largely limited by the main thread with LOD at 400. The “Limited by main thread” issue will likely be gone with the move to DX12, although it’s debatable if it’ll help performance.
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I’ve found that no matter what I set my settings to, low or ultra, I am always at max on that one thread…
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Like to know also….
This^ That’s why I’m not worrying too much about increasing LOD settings at the moment. I’ll wait until the next update and then I’ll start increasing it
compressed j peg photos don’t do the images justice. not a good comparison
That was true with FSX too
These are youtube videos though?
Exactly. All these outside view cessna at 10k ft performance comparisons mean absolutely nothing.
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I will recreate your setting and location today. But i wonder already why you only have about 4,x Gb of VRAM in use in WQHD? I found out that when putting it on LOD400 (i.e. in Big Apple), it will scratch at the 8GB limit of my rtx3070 pretty fastish.
Also i assume from my tests, that the US locations are somehow better “optimized” than where i fly in europe mostly.. With LOD200 in Manhattan i get around 45-50fps with LOD200, but in Nürnberg (my hometown), which is also a beautiful photogrammetry city, but far from the “complexity” of Manhattan, my fps drop down to 35-40 currently.
This is strange! I put the exact same settings like you have and tried to search the matching spot:
The above image was shot with ctrl + y being pressed in LOD400, so the plane was frozen.
The pic below was shot in actual flight mode in LOD400:
Seems like when freezing the plane with ctrl + y, your CPU is ways less under load (compare 58% vs 26%).
It’s also strange that my VRAM is already at over 7Gb in contrast to your setup, though everything is the same. Also i dont have these 40+ FPS in the rest of this area around LAX when actually flying..
Edit: I think the high CPU load on the second one can be ignored. I tested it again and found out that the CPU is under heavy load (fans are going up) when releaseing the plane from that ctrl + y mode. After about 5 seconds the CPU load drops back to about 25-30% in this scenario.
Edit2: Just for comparison i tested with lower LOD settings as well:
LOD300 ctrl + y mode:
LOD300 flight mode:
LOD200 ctrl + y mode:
LOD200 flight mode:
I noticed that when going above LOD 200 in su6 it is critical to have precach at ultra or panning will cause significant fps drops.
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Even at ultra precache, panning on the ground significantly cause fps drops with LOD400. I am referring the stutter while changing view angle in cockpit in general. After getting airborne it works pretty well but something on ground makes it really bad. For now I keep LOD 200 on the ground and switch back to LOD400 after 1000 feet as a workaround.
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