Post by Senchay on Feb 10th, 2019 at 4:00pm
i can confirm the "way" lower fps. And of course i ill give you all info you need.
I think this is not related to GPU at all. At least in my case.
My system is:
- 7700k on 4.5ghz
- RTX 2080
- 16GM Ballistrix Sport Ram
- Asus Prime Z270K
- Win 10 Pro
- All drivers latest version atm
- p3d 4.4
For example, my results with cpu/gpu are very different in behaviour as a other 747/8 for example. In the CS i get around 20 fps less in unlocked mode in the new KPDX from flightbeam.
I start the same flight, same exact time, no weather, same settings of course and lift of the runway in the other 748 with 45 fps. In the CS i get not 30, most of the time 22-25. If i would lock fps (what i can do with any other plane basically) i get even less fps, then they are around 19 to 25. You may call 24 fps movie quality but i think you know this is just a weak excuse... In p3d, with any monitor over 50hz this 19 to 24 fps are a slideshow.
When i look at CPU/GPU performance its clearly the CPU that gets hit dramatically on 1. core (Core 0). In such a way that it seems the whole other p3d calculations also get a hit. Terrain looks a lot more blurry in the CS757, autogen loads later and less in numbers and the whole mesh looks way different as when i fly in any other plane.
The GPU frequeny idles nearly in this plane (at least on a RTX) with like 300 to 500 MHZ core freq where the other is using the full 1800mhz i have. Load is around 25% so the GPU cannot be the problem at all.
Its the CPU that gets it in such a bad way that i have few words for it. And i am aware that P3d engine tries to keep this core busy and shedules oter thing by it. But usually i can get away with like 95%, what means that really everything in terrain still gets calculated too. Here it gets completley bashed by the sim, doesnt matter i free the core or not.
Bear in mind that i already try to keep things from core 0 by telling chaseplane and smartcars etc to not use core 0 at all. And this works very well in near all other planes.
So yes, there would be a real need to lower this cpu hits to have better perf.
I compared to 4 other planes,, being other 748, MD 80 by Leonardo, AS a319 andthe Dash 8. Last one cant be counted i guess so lets say 3 other planes. All of them try to max the GPU way more over the CPU. Just the CS seems to do this, again, in such a bad way that not only perf takes a hit but the whole rendering of the sim elements.
Clouds look worse, terrain too and the fps are bad...
Sorry to say but atm im not a real happy customer. I bought this 2 days ago and had nearly only hassle. VNAV/LNAV seems pretty unstable, holding didnt work in 3 cases and many other bugs.
But thats another story...
Now im usually not someone who likes to do this "ranting". Im a dev myself and i know how it feels when customers are not happy with the time one spent and energy and all that. But what else can i say? 20 FPS difference over other planes is dramatic and a real reason to put this out in words i think.
I always talked about inside fps btw, in the VC. Outside it looks way way worse even...
In 4k textures and SSAA the other 748 goes for me somewhere aroung 80 to 100 fps in the air. The CS 757 does 30 fps with 2k textures and MSAA 8.... Thats hilarious, sorry. Such a big difference should not be
Ill add a screenshot later or 2
A pic in unlocked state ill add later on airport. There wont be a big difference though, maybe i reach 28, 29 unlocked. thats still over 25 fps less.
I think this is not related to GPU at all. At least in my case.
My system is:
- 7700k on 4.5ghz
- RTX 2080
- 16GM Ballistrix Sport Ram
- Asus Prime Z270K
- Win 10 Pro
- All drivers latest version atm
- p3d 4.4
For example, my results with cpu/gpu are very different in behaviour as a other 747/8 for example. In the CS i get around 20 fps less in unlocked mode in the new KPDX from flightbeam.
I start the same flight, same exact time, no weather, same settings of course and lift of the runway in the other 748 with 45 fps. In the CS i get not 30, most of the time 22-25. If i would lock fps (what i can do with any other plane basically) i get even less fps, then they are around 19 to 25. You may call 24 fps movie quality but i think you know this is just a weak excuse... In p3d, with any monitor over 50hz this 19 to 24 fps are a slideshow.
When i look at CPU/GPU performance its clearly the CPU that gets hit dramatically on 1. core (Core 0). In such a way that it seems the whole other p3d calculations also get a hit. Terrain looks a lot more blurry in the CS757, autogen loads later and less in numbers and the whole mesh looks way different as when i fly in any other plane.
The GPU frequeny idles nearly in this plane (at least on a RTX) with like 300 to 500 MHZ core freq where the other is using the full 1800mhz i have. Load is around 25% so the GPU cannot be the problem at all.
Its the CPU that gets it in such a bad way that i have few words for it. And i am aware that P3d engine tries to keep this core busy and shedules oter thing by it. But usually i can get away with like 95%, what means that really everything in terrain still gets calculated too. Here it gets completley bashed by the sim, doesnt matter i free the core or not.
Bear in mind that i already try to keep things from core 0 by telling chaseplane and smartcars etc to not use core 0 at all. And this works very well in near all other planes.
So yes, there would be a real need to lower this cpu hits to have better perf.
I compared to 4 other planes,, being other 748, MD 80 by Leonardo, AS a319 andthe Dash 8. Last one cant be counted i guess so lets say 3 other planes. All of them try to max the GPU way more over the CPU. Just the CS seems to do this, again, in such a bad way that not only perf takes a hit but the whole rendering of the sim elements.
Clouds look worse, terrain too and the fps are bad...
Sorry to say but atm im not a real happy customer. I bought this 2 days ago and had nearly only hassle. VNAV/LNAV seems pretty unstable, holding didnt work in 3 cases and many other bugs.
But thats another story...
Now im usually not someone who likes to do this "ranting". Im a dev myself and i know how it feels when customers are not happy with the time one spent and energy and all that. But what else can i say? 20 FPS difference over other planes is dramatic and a real reason to put this out in words i think.
I always talked about inside fps btw, in the VC. Outside it looks way way worse even...
In 4k textures and SSAA the other 748 goes for me somewhere aroung 80 to 100 fps in the air. The CS 757 does 30 fps with 2k textures and MSAA 8.... Thats hilarious, sorry. Such a big difference should not be
Ill add a screenshot later or 2
A pic in unlocked state ill add later on airport. There wont be a big difference though, maybe i reach 28, 29 unlocked. thats still over 25 fps less.