Is poor performance in Falklands for Apache due to AH-64 mod or South Atlantic map, or both?

[DmitriKozlowsky]

AH-64D is my poorest performing mod. As far as FPS goes.  Its also one most susceptible to black screen black out. This is magnified when I fly in Falklands out of Mt. Pleasant.

I fly in 2D 2560X1440@144 refresh. Visibility is Low. GPU is 3070Ti FE. 64gb ram. CPU is XEON. OS win Win 10 Pro 64.

In NTTR, Marianas, and in Syria I average 90 to above 100, rarely above 110 FPS with AH-64D. FPS drops, in all theaters, if TADS in on MFD. FPS further drops if IHAADS is IR ON.  NVG do not appear to effect FPS.

In Falklands out of Mt. Pleasant with TADS on left MFD, IHAADS in night mode, at NOE height, I drop down to 20 FPS, and almost never above 40.

Is this fault of Apache mod, or South Atlantic map, or both?

My fixed wing FPS in Marianas, Syria with A-10CII, AV-8B, Mirage is between 120 and 150, rising to 180 at high altitudes.

My rotary FPS in those theaters with KA-50III, OH-6A mod, Gazelle, and UH-60L mod are all above 120, Gazelle is 130 averaged.

The slow child is the AH-64D. In South Atlantic, the Apache is really a low performer.

[TOViper]

Hey Dmitri!

I have a few performance issues here and there, thus I am referring to your posting above; I have a few questions:

1. Is there any difference in having the electric system turned ON or OFF (hot start or cold start) on your rig?
2. Do you see a low frame rate when flying above the "magic 900ft AGL limit" that this map introduces, or does it increase the "expected bit" when transitioning from lower altitudes to higher altitudes?
3. What terrain texture setting are you using? I am asking since it requires GPU RAM and the 3070TI has only 8GB RAM

But following your information above, there is a huge difference between the modules, indeed.
Might be the case that the high amount of triangles of the AH64 together with the high requirement of GPU RAM for the map makes you system cry.
I think it needs more investigation. I assume your shaders are current, and no "old driver versus current DCS shaders" are on your system.

edit:
After a quick test, it seems that the AH64 is susceptible to hard frame drops, even when cold on the ground (between 180 and 70 fps on my rig).
I am currently preparing two videos, one on SA, another one on CAUC...

Edited March 21 by TOViper

[DmitriKozlowsky]

1 hour ago, TOViper said:

Hey Dmitri!

I have a few performance issues here and there, thus I am referring to your posting above; I have a few questions:

1. Is there any difference in having the electric system turned ON or OFF (hot start or cold start) on your rig?
2. Do you see a low frame rate when flying above the "magic 900ft AGL limit" that this map introduces, or does it increase the "expected bit" when transitioning from lower altitudes to higher altitudes?
3. What terrain texture setting are you using? I am asking since it requires GPU RAM and the 3070TI has only 8GB RAM

But following your information above, there is a huge difference between the modules, indeed.
Might be the case that the high amount of triangles of the AH64 together with the high requirement of GPU RAM for the map makes you system cry.
I think it needs more investigation. I assume your shaders are current, and no "old driver versus current DCS shaders" are on your system.

edit:
After a quick test, it seems that the AH64 is susceptible to hard frame drops, even when cold on the ground (between 180 and 70 fps on my rig).
I am currently preparing two videos, one on SA, another one on CAUC...

I always cold start. But I'll check hot start. I doubt there would be any difference. But one never knows.

My GPU ram is maxed and GPU util in DCS is between 85% - 98%. CPU load , is about 60% spread across 8 threads. 

Thus far I find that 8gb of GPU Vram is sufficient for DCS. My terrain textures are High, visibility to Low. Switching to Terrain texture to Low has no measurable hit on my FPS. I've been through this many times. I am always looking for tweaks.

Its the AH-64D combined with South Atlantic. I do see high FPS hit in every theater when IHAADS is in IR night mode. That is a single most expensive item in Apache. Far second is TADS video. For one reason or another. AH-64D , on my rig, has best performance in Marianas. Followed by NTTR. Syria/Cyprus has almost same FPS as NTTR with Apache.

ED has to look at IHAADS at night. RAZBAM has to look at South Atlantic. But I lean towards ED as culprit, as AV-8B and A-10CII in Falklands has high FPS. No complaints. The Devil's Duo is AH-64D and Falklands.

[TOViper]

okay.

Meanwhile I have prepared two videos, one showing max possible theoretical frame in SA and another one showing CAUCASUS. Watch the theoretical frames moving heavily. On SA it happens around 00:22, and on CAUCASUS around 00:40. So there is definitely something very strange going on. In case of CAUCASUS, in my configuration, we are talking about fps between 180 and 120, which is a drop of a third with exaclty NOTHING going on the map!

 

Edited March 21 by TOViper