Having issues with DCS core parking with the AMD ryzen 9950x3d CPU

[avenger82]

On 4/12/2025 at 1:22 PM, RTS354 said:

I'm just sticking with the 9800x3d for now as there are no extra complexities that I have to deal with. Thanks for the info.

It’s also significantly cheaper than 9950x3d, and you’re probably be GPU limited for a long time anyway (even with RTX 5090 ). For others I think it’s beneficial to find what you should do to achieve better CPU frame times with 9950x3d vs 9800x3d as shown in the video I linked .

[draconus]

On 4/2/2025 at 8:01 PM, avenger82 said:

However, It’s a bit weird , because CPU frame time is always a bit lower for 9950x3d, but at the same time current FPS is usually slightly lower.

9950X3D shows clear computational advantage but all the tests were GPU limited. For some reason with 9950X3D GPU times were a tiny bit higher thus the fps a tiny bit lower.

It also shows that keeping the card and the same settings you'd get the same results with even weaker CPUs unless you get into very CPU hungry case.

[avenger82]

12 hours ago, draconus said:

9950X3D shows clear computational advantage but all the tests were GPU limited. For some reason with 9950X3D GPU times were a tiny bit higher thus the fps a tiny bit lower.

It also shows that keeping the card and the same settings you'd get the same results with even weaker CPUs unless you get into very CPU hungry case.

Yes ,  but for me the 9950x3d advantage over 9800x3d is strange , because it’s only game test that shows such consistent difference. Does DCS use second CCD also?

[Racoon-1-1]

Am 26.3.2025 um 19:49 schrieb RTS354:

I just built a new PC with a 9950x3d and so far all of the games but DCS use the core parking feature of the AMD chipset and the Windows 11 game scheduler. I tried using the AMD Ryzen master in game mode and DCS still does not park the non-cached cores. Another issue is that if a game doesn't use core parking, the player will experience frame stuttering in the game. Does anyone know of a solution to this problem? Like I said previously ALL of my games but DCS World park the correct cores when they are running, so this is an issue with DCS World.  

I have similar problems when I start DCS on screen (non-VR) with a i7-12700K (which has 'normal' and efficiency cores). In 80-90% of the cases I experience heavy freezes like every 10 seconds already in the menu. What I have to do is to manually un-assign all efficiency-cores from DCS with process-lasso and then also manually re-assign them. I have absolutely no issues in VR tho.

[Colos1357]

I have 2 idea.

1. Limit your FPS in the GPU driver e.g. 60 FPS. Important, that you no limiting the FPS in the DCS settings!!! The GPU driver limit make a GPU limit situation, and the CPU will have a reserve for sudden loads.

2. Turn off the "Global cockpit illunination". This make my system stutter too.

 

The second CCD is not parked because the DCS places the I/O thread on it. Like than Intel energy-saving cores.

"common cores: {10, 11, 4, 5, 12, 13, 14, 15}
render cores: {0, 1, 8, 9, 6, 7, 2, 3}
IO cores: {16, 17, 18, 19, 22, 23, 26, 27, 20, 21, 24, 25, 30, 31, 28, 29}
unavailable cores: {}"