This has probably been discussed before but I wanted to post here in case this has not been mentioned here.  I was reading an old Avsim thread about adjusting the CUDA compute setting in Nvidia inspector to improve P3D performance.  I use photo scenery and I have noticed stutters with it sometimes.  No blurries, just the odd stutter like pauses right in the approach, which kind of take away the fun. 

I cannot explain the technical details behind this for brevity.  My Nvidia Inspector I used to have until today did not have an option to change the CUDA setting.  But I found this online article which discusses it and points to versions of Nvidia inspector that allow the setting to be changed.   Since changing the settings I have seen much more fluidity in P3D4.5 and Xplane11 as well.  Not a placebo effect, just a change for the better though it cannot be measured by fps alone.  Here is a link to the discussion, which has links to the updated Nvidia Inspector...

 

John

https://www.reddit.com/r/nvidia/comments/aco4ks/how_to_turn_off_nvidias_force_p2_power_state/

 

Edited June 20, 20196 yr by John_Cillis

Thanks for that tip. I'll try it later today.

 

I've definitely more fps on X-Plane, now hitting 40fps with the Zibo 737 on cruise. Before, I was getting about 30ish. 

Bear in mind this is also with Skymaxx pro.

Edited June 20, 20196 yr by Jude Bradley

9 hours ago, John_Cillis said:

This has probably been discussed before but I wanted to post here in case this has not been mentioned here.  I was reading an old Avsim thread about adjusting the CUDA compute setting in Nvidia inspector to improve P3D performance.  I use photo scenery and I have noticed stutters with it sometimes.  No blurries, just the odd stutter like pauses right in the approach, which kind of take away the fun. 

I cannot explain the technical details behind this for brevity.  My Nvidia Inspector I used to have until today did not have an option to change the CUDA setting.  But I found this online article which discusses it and points to versions of Nvidia inspector that allow the setting to be changed.   Since changing the settings I have seen much more fluidity in P3D4.5 and Xplane11 as well.  Not a placebo effect, just a change for the better though it cannot be measured by fps alone.  Here is a link to the discussion, which has links to the updated Nvidia Inspector...

 

John

https://www.reddit.com/r/nvidia/comments/aco4ks/how_to_turn_off_nvidias_force_p2_power_state/

 

May I ask if it necessary to create a .bat file as suggested in the above link, or did you simply change the CUDA setting in Nvidia Inspector?

In nVidia parlance, a "compute" workload is a non-graphics workload, such as mining or folding applications.  Flight sims are definitely imposing a graphics workload, which shifts the GPU into the P0 state, not the P2 state.

That said, I'm highly sceptical that this actually works as suggested here.  I played with this on a 1080Ti some time ago, and could not document any improvement at all.

Regards

 

 

2 hours ago, w6kd said:

In nVidia parlance, a "compute" workload is a non-graphics workload, such as mining or folding applications.  Flight sims are definitely imposing a graphics workload, which shifts the GPU into the P0 state, not the P2 state.

That said, I'm highly sceptical that this actually works as suggested here.  I played with this on a 1080Ti some time ago, and could not document any improvement at all.

Allowing the GPU to run in the P2 state can also effect rendering (lower memory clock on most nVidia later gen cards).  Do we know how much rendering work LM has moved over to the GPU?  I experience snappier panning with my 1080 when the P2 state is disabled (YMMV, of course).  At any rate, disabling the P2 state is easy to do with later versions of nVidia Inspector... and costs nothing.

Cheers,

Greg