Cpu and gpu performance

Hi guys, I'm running ACC on a computer with i7 6700k@4.6ghz, 1080ti, 16gb ddr4 3200. My monitor is 1080p.

I have observed that in the hotlap mode, the percentage of CPU is 40% and CPU 99%

Still in career mode with 20 opponents, the CPU load increases up to 50-60%, but the GPU does not exceed 70-80%. the cores do not exceed 60% either...

Do you think my CPU is creating a bottleneck?
Thank you

 

Not if the maximum load on any individual core is only 60%. Make sure that you're not looking at average CPU load (which is often much less than an individual core).

 

I think what is happening is that in hotlap the GPU load is high because the CPU time is lower and GPU can run at full throttle but in race the CPU is acting as a "bottleneck" but don't worry about this if your frame rate is not suffering, I can run 15 cars with my i5 750 at 90% CPU without much fps loss so in the Sim current state maybe you can run around 50 cars?

 

[QUOTE = "vortex19, post: 993750, member: 158861"] No si la carga máxima en un núcleo individual es solo del 60%. Asegúrese de no estar viendo la carga de CPU promedio (que a menudo es mucho menor que un núcleo individual). [/ QUOTE]
ninguno de los núcleos supera individualmente el 60-70% de carga, es por eso que me resulta extraño. Se supone que si estuvieran al 100%, estarían haciendo un cuello de botella ¿no?

 

I'm also wondering if I have a bottleneck or if it's just the early state of the game

My CPU occupation in races (the race event) is comparably high with around 50-60% and my GPU actually is also around these values. Unfortunatly I only have around 40 FPS although my hardware isn't totally occupied.
I also noticed that when I watch a replay and hit the pause button my GPU occupation rises to about 80% and as soon as I press the play button it decreases to 50-60% again. Then in the menu however, the GPU occupation explodes to 100% and stays there....which I find strange since it's only the menu right? :/

CPU: i7-920 (2,67 GHz)
GPU: GTX 770
Resolution: 1080p

 

If you have an Nvidia GPU it might be worth checking for this particular bug described in this link here. It has been already reported.
The workaround is to disable the service on Windows.
It is unrelated to ACC but as it steals time from all cores up to 30% it may mean the difference between being able to run full grid or not for some.
The reason we don't usually notice this is because the Nvidia driver is way more efficient than the AMD according to hardware review sites tests. So even with the bug if you have an Nividia gpu you may never notice it.

 

[EDIT] I forgot this is ACC forum and the following may not apply to the new engine... this was my experience with AC, sorry.[/EDIT]

I had exactly the same CPU and also experienced those problems. If you check with HWMonitor you will probably see 2~3 cores loaded and the other 6 (if you have hyperthreading enabled in the BIOS, doing almost nothing).
Try disabling Hyperthreading (4 cores is more than enough and you can avoid some troubles from sharing cache).

Also that CPU is really nice (I really liked it, had it for 8 years!) but it's a bit old and slow: it has a low CPU frequency (2.8GHz with turboboost on) and doesnt't support the latest X64 extensions).

Overclocking helps a bit, if you have a nice cooler you can find several tutorials online for it, also try boosting your QPI link speed and RAM clocks (if your RAM allows it).

I had a GTX970 and noticed a big difference when I switched the CPU...

 

there's a tool in game for FPS?

 

While in game
Shift +Tab to open steam menu.
Then Settings > In Game and than you will find options to enable the Fps counter.

 

Ah ok thx!

 

That CPU is nearly ten years old and running stock speed, I ran one until recently overclocked to 4ghz which makes a big difference as well as the switching HT off in the BIOS trick as above.

https://www.overclock.net/forum/5-intel-cpus/538439-guide-overclocking-core-i7-920-930-4-0ghz.html

 

Will try that, thx for the advice

 

how do you see the cpu occupation on competizione?

 

The game has a native FPS tool/ counter:
C:\Users\User\Documents\Assetto Corsa Competizione\Config\hud.json

Change
"fPSVisible": 0, to
"fPSVisible": 1,

 

This is not actually true. CPU bound processes can be working at 100% of their capacity (software bottleneck) while that cpu thread is for example at 60%. Games are a prime example, specially AC. Rarely you see more than 70% usage on a single thread when running AC (in online or single car on track).

 

In the example you gave, you are limited by the particular process, not the CPU. If a process is running within a core which is itself at less than 100% load, you are not CPU bound as the CPU (or, in this case, the individual core) has the capacity to do more work.

 

Thank you!