Hello everybody!

As I fly in Prepar3D v5 I have noticed that the main component of my pc that s working the hardest is the CPU and not the graphics card, does that make sense? When I fly I get around 50% on the CPU, 10GB/16GB on the RAM and only 10% on the GPU. Is there a problem?

Intel i7-4770

16 GB RAM

GTX 1070 8GB

P3D v5 on 250 GB SSD

 

Thank you very much.

Yuval.

 

GPU load will be driven by the screen resolution, anti-aliasing settings, and scene complexity (with dynamic lighting, multiple layers of hi-res clouds and rain really hitting the GPU).  So 10% GPU load may be completely normal on a clear day on a 1920x1080 screen with low AA levels set.

 

Worth checking - what Tool are you using to get those figures?

No, that is very normal. CPU is working hard in P3D. Your graphics card gets bored. Most settings you crank up will again stress the CPU.

49 minutes ago, darem said:

No, that is very normal. CPU is working hard in P3D. Your graphics card gets bored. Most settings you crank up will again stress the CPU.

That depends on the settings, some stress the CPU, some the GPU.. read what was explained above..

2 hours ago, Yuval350 said:

As I fly in Prepar3D v5 I have noticed that the main component of my pc that s working the hardest is the CPU and not the graphics card, does that make sense? When I fly I get around 50% on the CPU, 10GB/16GB on the RAM and only 10% on the GPU. Is there a problem?

May be the app you get this numbers from. Use advanced tools like GPU-Z and CPU-Z to monitor your hardware. I use AnVir TaskManger, very sophisticated.

1 hour ago, darem said:

No, that is very normal. CPU is working hard in P3D. Your graphics card gets bored. Most settings you crank up will again stress the CPU.

That seems to be much less so with P3Dv5.  A lot of work for the cpu has been pushed to the gpu.

50% CPU load on a 4770? Mine is maxed at near 100% and that's on V4.5.
Are all your sliders hard left?

41 minutes ago, cowpatz said:

50% CPU load on a 4770? Mine is maxed at near 100% and that's on V4.5.
Are all your sliders hard left?

My 4770K typically runs at < 50% load... are we talking about the same thing, or are you looking at the first CPU core only?

He's probably looking at the overall composite of all cores.  That's what Task Manager reports in its default mode, unless you dig into the performance tab and look at per-core use.

Even though P3D is multi threaded it's using at most 4-6 threads - with the main thread core usually at 100%. That being said the more cores you have the lower your amalgamated core usage % will drop because the other cores are not being used that much and they are figured into that overall CPU usage.

Edited May 26, 20206 yr by Slayer

For whatever unknown reason, I found out that my core 0 was going to the brink of death in P3Dv5.  It caused constant, insufferable stutters.  Then just through trial and error, I got the cores to balance just by flipping on TrueSky in the options.  Now it's butter smooth.  Unlimited frames, adaptive-sync monitor, i7 6700K, GTX 1070.

"Unlimited frames" can fill up your main thread with processing frames that will dropped later anyway because they arent't needed. 

Thank you everyone for your help, I'm gonna try and respond to everyone.

14 hours ago, w6kd said:

GPU load will be driven by the screen resolution, anti-aliasing settings, and scene complexity (with dynamic lighting, multiple layers of hi-res clouds and rain really hitting the GPU).  So 10% GPU load may be completely normal on a clear day on a 1920x1080 screen with low AA levels set.

 

Is there anything on the settings page I can do you reduce the load on my CPU, one of the most important things for me is the Autogen, I have it on max I prefer not to touch that.

14 hours ago, mrlip said:

Worth checking - what Tool are you using to get those figures?

Just Task Manager (should I be embarrassed?)

13 hours ago, darem said:

No, that is very normal. CPU is working hard in P3D. Your graphics card gets bored. Most settings you crank up will again stress the CPU.

OK good to know, thanks 🙂

12 hours ago, Bert Pieke said:

That depends on the settings, some stress the CPU, some the GPU.. read what was explained above..

   Is there anything on the settings page I can do you reduce the load on my CPU? Same question.

12 hours ago, JoeFackel said:

May be the app you get this numbers from. Use advanced tools like GPU-Z and CPU-Z to monitor your hardware. I use AnVir TaskManger, very sophisticated.

Again, Task Manager I guess I need to get another app for this.

11 hours ago, Mace said:

That seems to be much less so with P3Dv5.  A lot of work for the cpu has been pushed to the gpu.

Well I never had v4.5 so I didn't really know.

11 hours ago, cowpatz said:

50% CPU load on a 4770? Mine is maxed at near 100% and that's on V4.5.
Are all your sliders hard left?

I mainly stayed with the settings P3D came with, only changed the Autogen settings and I am very happy with them, note the all of my testing was with a default P3D aircraft in a payware scenery, with only P3D and ChasePlane running. 

10 hours ago, Bert Pieke said:

My 4770K typically runs at < 50% load... are we talking about the same thing, or are you looking at the first CPU core only?

Same thing, overall performance I did notice that my core 0 is always at 100% when using P3D.

10 hours ago, Mace said:

He's probably looking at the overall composite of all cores.  That's what Task Manager reports in its default mode, unless you dig into the performance tab and look at per-core use.

Yes, overall performance.

9 hours ago, Slayer said:

Even though P3D is multi threaded it's using at most 4-6 threads - with the main thread core usually at 100%. That being said the more cores you have the lower your amalgamated core usage % will drop because the other cores are not being used that much and they are figured into that overall CPU usage.

I don't really know a lot about this, my core 0 is always at 100% and the other 7 are about at 45 - 50%.

9 hours ago, Greg073 said:

For whatever unknown reason, I found out that my core 0 was going to the brink of death in P3Dv5.  It caused constant, insufferable stutters.  Then just through trial and error, I got the cores to balance just by flipping on TrueSky in the options.  Now it's butter smooth.  Unlimited frames, adaptive-sync monitor, i7 6700K, GTX 1070.

I have the same problem, core 0 at 100%, Confirm true sky is the new weather enhancement in v5? right? if It is then I don't want to switch it on, I don't like the way it looks, It reminds me of XP11.

 

2 hours ago, JoeFackel said:

"Unlimited frames" can fill up your main thread with processing frames that will dropped later anyway because they arent't needed. 

Is that good or bad? not a computers guy😁

 

Thank you everyone!!!

Yuval.

11 minutes ago, Yuval350 said:

Is that good or bad? not a computers guy😁

Bad because your CPU is doing hard work for nothing, it could use the processing time for other threads.

It's a bit like driving on the highway full throttle in 2nd gear instead with low revs in Overdrive 😉