4K Performance

[SharpeXB]

DCS performs quite well in 3840x2160

Some Fraps test results using a single GTX 980 SC

 

P-51D Red Tails Dogfight

Min 22 Max 62 (vsync on) Avg 40

 

DACT F-15 vs 1 Su-27

Min 42 Max 93 Avg 56

 

A-10C Sitting Ducks

Min 32 Max 96 Avg 47

 

In the attached screenshot you can see how much this helps spotting too.

Edited May 5, 2015 by SharpeXB

[HiJack]

Awesome, is that from the U28D590D?

[SharpeXB]

Awesome, is that from the U28D590D?

Yes

 

not bad performance considering 4K quadruples the pixels. I'm running it on a single GPU (GTX 980 SC)

Edited May 5, 2015 by SharpeXB

[SDsc0rch]

heh! 2xGTX980s SLI'd!

 

*whistles!*

 

 

even then, i would want consistent 60fps

[Kuky]

single GTX980 (I use it also and I get good performance)

 

heh! 2xGTX980s SLI'd!

 

*whistles!*

 

 

even then, i would want consistent 60fps

 

Yes

 

not bad performance considering 4K quadruples the pixels. I'm running it on a single GPU

[will-]

not while trying to stream! well, it can only improve from what it is! Would be great to get a full function world on some of these MP servers....

[blackbelter]

I can imagine how exciting it will be the next time I upgrade my system... to GPU with 6GB vram, and a VR head gear or 4K display...:music_whistling:

[Weltensegler]

I wonder what DCS 2.0 will be compared in this scenario.

[rcjonessnp175]

I'm sure dcs 2.0 will be awesome performance in 4k and such. I'm wondering still with all that pretty graphics how it will perform when your in an actual combat scenario not just a single ship flying alone on empty map.

[SharpeXB]

heh! 2xGTX980s SLI'd!

 

*whistles!*

 

 

even then, i would want consistent 60fps

I think DCS only uses one GPU for a single monitor. Also I'm running on single GPU because there's a bug with the mirrors in SLI.

[rcjonessnp175]

I use sli 980 when I'm in nvidia 3dvision mode, helps out quite abit

[SharpeXB]

I'm wondering still with all that pretty graphics how it will perform when your in an actual combat scenario not just a single ship flying alone on empty map.

I think DCS gets CPU limited in large scenarios. Not sure exactly. Even with the 980 I can get a drop down to 25 in certain situations regardless of the graphic settings. Like for example, the Su-27 mission "Blockade". From the ramp start, look left and it will drop.

 

The Red Tails Dogfight had some good numbers, I'm certain the low FPS is firing the P-51 guns.

 

The power usage on the one 980 hits 100%

Edited May 4, 2015 by SharpeXB

[rcjonessnp175]

Yup same here overall good performance but when those cpu scenarios kick in ya kind of a kick in the junk. But it is a simulator so I guess that is expected

[SharpeXB]

Yup same here overall good performance but when those cpu scenarios kick in ya kind of a kick in the junk. But it is a simulator so I guess that is expected

and those cpu limitations probably aren't dependant on your screen resolution.

 

I ran some tests in X-Plane and surprisingly the rate only drops by 5fps in the air and 10 on the ground when going from 1080p to 4K

[BitMaster]

The game just "flies" better with high fps count.

 

I would aim for 50-60+ fps while knowing that some scenarios punch it down to 25, no matter what GPU(s) you have as it is likely CPU dependant and that horse is well beaten to death already.

 

We can hope that EDGE/DX11 eliminates that bottleneck, despite it will stay single-core at it's very engine. If not, then that will still be a difficult task for the single core....

 

Till now we have mostly or only seen Edge scenes with low object count and no full scale battlefield. Let's wait and see....

 

I am curious about Edge, when and what it will achieve as there is such a Hype about it.

[SharpeXB]

For a better frame rate, what also works very well is to just run at 1440x2560 and upscale to 4K. That looks extremely good and runs smoother.

[Dav IRL]

As stunning as Edge looks the frame rate during combat really needs to improve.

[sobek]

As stunning as Edge looks the frame rate during combat really needs to improve.

 

Flown much in EDGE lately, have you? ;)

[fltsimbuff]

Well its true fps in combat needs to improve. We have been shown empty map flights with exception to that su25t video in edge. And you can plainly see fps drops in that so combat fps needs more work in edge from what we have seen. Honestly it's going to be like arma 3 until a full engine rewrite and all cores of processor is used.

 

The current engine appears to be very much CPU-bound, and it has been implied that there is a lot of graphics overhead keeping the CPU busy. There are a lot of people that have insisted more things need to be put into different threads to better utilize multi-core CPUs, and ED's response regarding 2.0 was that they looked at it, and it wouldn't make much difference. To me this implies that the overhead has decreased so much with EDGE that it is no longer CPU-bound.

 

This would make sense given the DirectX changes that are supposed to take a lot of the CPU overhead out of the 3D rendering. If the CPU can now keep the 3D pipeline filled without having to run full tilt, it should be freed to keep up with the more mundane tasks (systems simulations, physics, and game objects).

 

If ED says they don't need to use all the cores on a CPU to get good performance on the new engine, I believe it. This is the way 3D graphics engines have been since the beginning of 3D graphics. Graphics cards eventually outpace the ability of the application to feed them, and the APIs and engines can/need to be rewritten to put more of the load back on the GPU. This is especially true given that GPU performance has been growing MUCH faster than CPU performance over the past few years.

 

Increasing the resolution to 4k is going to put a lot more additional load on the Graphics card than it will on the CPU, as that's where most of the additional work needs to be done. Most of us are probably already running 4k via MSAA anyway.

 

The bottom line is that I think we should stop making assumptions about the performance of the new engine based on the current engine and how much or little we think is changing with regards to multi-threading. It is probably irrelevant anyway.

[AtaliaA1]

I think DCS only uses one GPU for a single monitor. Also I'm running on single GPU because there's a bug with the mirrors in SLI.

 

 

Have you also ticked the "Use Single Monitor Performance" in the control panel?

[SharpeXB]

Have you also ticked the "Use Single Monitor Performance" in the control panel?

Yes

 

I had been running a single GPU because on a 1080p screen one 980 was enough. I also wasn't aware SLI functioned correctly in DCS although I saw both being used.

 

I'm using a single Titan X now. But I've come to the realization that (for other games) 4K resolution + Ultra Graphics + 60fps = TWO Titan Xs. So another is on the way...

 

A single Titan X runs DCS at 4K very well though.

http://forums.eagle.ru/showthread.php?t=142942

Edited May 8, 2015 by SharpeXB