Help with FPS or Looking for CPU-GPU interpretation expert (or not) help

[AKA_Clutter]

OK Here is the issue. Last night I was on DCS multi-player with two friends. First run through I had 30 - 40 fps. Not the best, but what I have come to accept in DCS and VR.

 

the host's game crashed so we restarted. I got the same plane with the same loadout at the same place. This time I have 20 -25 fps. WTF.

 

Of late I have been running HWMonitor and logging the files in different sessions.

 

I noticed that from the first runt I had CPU usage ~ 30% (AVG = 26%)and GPU load bounce between 50ish and 75ish (AVG = 56).

 

The second run had a CPU usage AVG 20% or and a GPU usage of 40%.

 

In both cases I hade expected wither the CPU or GPU to be close to 100% (90% plus) given.

 

Any clue as to what may be going on? I've attached a PDF show the runs. the Blue Orange are from the first run, when the other (Yellow/Gray) two are from the second run.

 

I was running Precision X1 with a GPU overclock.

 

Thanks for any help. Oh, CPU is not overclocked and am now running a Rift S.

DCS GPU-CPU Chart.pdf

[AKA_Clutter]

As most DCS vets know Clutter, the core code is very old (back before 2010 in places I have heard) and the sim does not correctly and fully utilized modern multi-threaded CPUs or fully load the GPU. Multiplayer adds another level of complexity that depends upon several factors. Your chart is welcome but without being at your system and varying various settings, not easy to determine. Your frustrations though are the same that all DCS players have from time to time. :(

 

 

Given that Black Shark 1 came out in 2008, that doesn't surprise me at all. And yes, VR users struggle more than most.

 

One thing that has me more frustrated than usual is that my impression (no numbers to back t his up) is that the 1080 FTW performed better than the new 2070S, IN DCS.

 

 

You mentioned "varying various settings" Can you name a few for me to try? I assume they are both in-game and out of game settings.

 

TIA :pilotfly:

[Gunnars Driver]

The second run had a CPU usage AVG 20% or and a GPU usage of 40%.

 

In both cases I hade expected wither the CPU or GPU to be close to 100% (90% plus) given.

 

Any clue as to what may be going on?

 

As Arelius says, DCS use more or less only one core. One thread/core do the horse work and another does the sound(I think).

 

This means that in a multicore CPU you cannit reach 100% CPU load when it comes to calulate from all cores.

 

In my i9 (8 cores but 16 threads) if the cire DCS use is maxed out to 100%, the windows total CPU load will say 7-8%. One core maxed out and all other idle gives 1/16= 6.25%.

 

So from this comes that you should use for example the system monitor an view all core load separate and look at the one doing the DCS horse work.

 

When I used my Oculus Rift for DCS I used this technique to see what was bottlenecking and adjusted the DCS settings from this data. With reverb as I use now, there is a software called fpsVR that is very helpful, but its really about the same thing. I dont know if you can use fpsVR with the RiftS...if possible, its really helpful.

 

Try to keep the CPU from reaching 100% on the DCS core

On any core, really

Make sure no other processes is taking performance from the DCS core.

 

https://forums.eagle.ru/showpost.php?p=4163309&postcount=288

 

You can see core 15/”CPU15” reaching 100% load, despite total CPU load is quite low.

Edited April 22, 2020 by Gunnars Driver

[AKA_Clutter]

Thanks for the feed back. More testing and tweaking.