6 minutes ago, Andreas Stangenes said:

I downloaded process lasso, but the windows dynamic process thing was already disabled. However, what I noticed was that the process was listed as below normal priority. I put it to normal. 

 

All I can say is that since I have it running in the background, the CPU spikes causing stutters every couple of minutes went away. 

There's s situation getting discussion on flightsimulator forum which i also started a thread on yesterday where neither your GPU or any of your CPU cores are fully loaded, yet the sim is limiting on main thread, thus holding back FPS. Appears associated with the glass in the heavies... 787, A320, 747 and the Citation. It's been reported. Speculation on cause and solution.. you can read here:

https://forums.flightsimulator.com/t/cpu-bug-limited-by-main-thread-is-causing-the-bad-fps/190971

Ok Im kinda confused and at my ropes end here. In the hunt for best performance vs eye candy I have put windows gamemode on. I have put priority to background processes in windows, I have ht on in my bios. I have tried lasso and made sure the windows dynamic thread thing is turned off. 

I have reduced the resolution of my main monitor from its native 3440 x 1440 down to 1080x1920 and everything in between, and put the resolution in sim to match my monitor res set in ncp. I have tried setting vsync on and off, FPS limiter in ncp to half of my screen refresh (60mhz down from 100). 

The sim run FAIRLY smooth, but my cpu is very often at 100% utilization. Its running at 63 degrees c, so my cooling is doing a decent job of it, but its nowhere near the % I see others with my chip have. When I dont find it at 100% utilization, it sits around 60%. 

I have a asus ranger VIII mb, 2x16 dualchannel ddr4 dims 3200mhz, i7-6700k @4.4ghz, watercooled, asus rtx rog strix 2080ti overclocked by 150mhz. My 2080ti is sitting at 64%.  

I have an i7 6700K @ 3.4ghz, watercooled, RTX 2070 SUPER.  32gb DRAM.  My system is always limited by GPU.  Always.

That tells me your system has a problem.  I'm not overclocked at all and performing better than your overclocked system.  I didn't do anything but install the sim.  I'm running a 4K monitor.

I would be curious to see your system's memory usage.

17 minutes ago, WarpD said:

I have an i7 6700K @ 3.4ghz, watercooled, RTX 2070 SUPER.  32gb DRAM.  My system is always limited by GPU.  Always.

That tells me your system has a problem.  I'm not overclocked at all and performing better than your overclocked system.  I didn't do anything but install the sim.  I'm running a 4K monitor.

I would be curious to see your system's memory usage.

I also have the same CPU @4.4ghz and a 1080Ti with a 4K monitor, 32 GB memory. With the Airbus and the Dreamliner i am always CPU limited, with the other aircraft i am not but GPU limited. Did you check it with these aircraft ?

I have not touched the airliners.  I do not think the sim is ready for complex aircraft like airliners.  So... if that is where you're having performance issues... then... what I suspect to be a problem for developing complex aircraft is apparently true.

I am flying the 208b mostly. Memory usage is about 50% both on my card and the ddr4. 

Are your graphics set High or Ultra?

T45

Edited August 26, 20205 yr by Treetops45

Ive set them to high-end at the moment. Also tried ultra. Played with the render scaling quite a bit which is currently set to 80%. 

I've turned off AI traffic. What other settings impact the CPU the most?

You dont utilize the power of your GPU, that is why your CPU is at 100%. Up your graphics settings, you will not gain FPS but better looks without further decrease of FPS until your GPU is at 100%

Edited August 26, 20205 yr by Gomoto

2 hours ago, Andreas Stangenes said:

I've turned off AI traffic. What other settings impact the CPU the most?

Maybe  "ground aircraft density" ? Or car traffic.

Edited August 26, 20205 yr by MaVe64

OK, I tried the Process Lasso trick again, this time for a longer period and monitoring closely the occasional stutters and the core usage graphs.

It did no harm but it did not eliminate the periodical stutters either. However when Windows dynamic boosting was disabled, the usage graphs of the second group of 4 cores was more jagged and irregular, so I came to the conclusion that it's better not to mess with it.

Maybe it helps in case the Windows task scheduler is not efficient (AMD processors?) but in my case it didn't.

More info here: https://docs.microsoft.com/it-it/windows/win32/procthread/priority-inversion?redirectedfrom=MSDN

So here I am stuttering along at 17 fps with my 2080ti and i7-6700k at 4.4ghz, settings to medium, ai turned off, multiplayer turned off. 

Setting the global quality down to low end actually doesnt increase my fps by more than 2-3... 

Edited August 26, 20205 yr by Andreas Stangenes

Andreas,

That seems really low and strange that it does not scale. Is it the same in non-glass cockpits? On a i7 4700k with 1080 GLH, 1980p in EDDF with the A32n cloudes and rain I get between 23-28 flying at high settings.

Did you ever try Benchmark to see how your system compares to similar builds? Might be insightful in terms of hardware issues to look at

Good luck, Dominik 

Well I gave on on nvidia control panel for controlling my fps. I downloaded rivatuner and set my fps to 31. it seems to help, and I am now holding a steady 30 fps on highend settings. Will try to tweak further. Seems that my system doesnt handle unlimited fps very well..?

 

Edited August 26, 20205 yr by Andreas Stangenes