dcs performance shocking

[nigelmcelwee]

I have a pretty strong system and even on medium settings if i create a fast mission I get fps in the low 20s when facing the action. I'm new to dcs so is this the norm? Specs below:

 

3930k @ 4.5

GTX titan super clocked

16 GB quad channel 1866 XML profile

Acer 27 @ 1920x1080

 

Medium settings with heat blur on, vis range low, msaa off, cockpit and tree shadows off, no tsaa.

 

Shouldnt I be running pretty well with my setup? I run xplane 10 , ROF, and clod pretty high and never move from vsync locked at 60.

[IonicRipper]

There is definitely a problem with your game setup somewhere. My system is no where near yours and and with most settings on medium (except water and civ traffic) and heat blur, msaa x4, cockpit shadows but no HDR it runs around 50 - 60.

 

I can't tell exactly what could be the fault, hopefully someone with more knowledge then me can help you.

[Scoggs]

Yeah thats kinda odd. I run most things on high and a few on medium. I get 55+ with no tgp and mav running(at the same time). 45+ with them running. Specs in my sig. Except I have a 780 now.

[SyntaxError]

Try different Nvidia Drivers you shouldn't be getting that low FPS. Maybe try a re-install of DCS. It's no secret that the game is un-optimized and runs poorly compared to more modern graphics engines, but 20fps is clearly an issue on your side. Luckily ED are working on a new rendering engine.

 

Hope you come right!

 

Edit: Unless you using cluster bombs, then yeah you can expect a MAJOR slow down.

[Mnemonic]

Can you please provide mission you test on?

[Mewle]

I had a slightly similar experience. I took my rig to my brothers and my usually well tuned dcs install was beef jerky on his projector. Tried different resolutions and apprently it ran smooth for one session with no change (I passed out by that time). There were no other updates or steam running just plain vanilla dcs world. Now it's back it runs fine again. :huh:

 

To return to your problem, if you have hyper threading enabled the game will only use one processor as there are only two threads for dcs. One for sound and one for all else, so start by ensuring it is disabled in bios maybe.

[nigelmcelwee]

Yeah im not sure why its running so low. When I do training missions it seems to run just fine. I think its all the AI in the fast missions that bogs it down

[nigelmcelwee]

I had a slightly similar experience. I took my rig to my brothers and my usually well tuned dcs install was beef jerky on his projector. Tried different resolutions and apprently it ran smooth for one session with no change (I passed out by that time). There were no other updates or steam running just plain vanilla dcs world. Now it's back it runs fine again. :huh:

 

To return to your problem, if you have hyper threading enabled the game will only use one processor as there are only two threads for dcs. One for sound and one for all else, so start by ensuring it is disabled in bios maybe.

 

I do have HT enabled. I thought that would help rather than hurt.

[Mewle]

I'm not an expert compared to some on here but I have read that it's better disabled as it'll split the two threads over one core rather than a core per thread. It could be totally unrelated but it'd be my first thing to check with the knowledge I currently have of dcs.

[Mewle]

I'm not an expert compared to some on here but I have read that it's better disabled as it'll split the two threads over one core rather than a core per thread. It could be totally unrelated but it'd be my first thing to check with the knowledge I currently have of dcs.

 

Can anyone chime in to confirm or otherwise.?

[mmaruda]

Make sure you have "prefer maximum performance" in NV control panel enabled.

[nigelmcelwee]

Make sure you have "prefer maximum performance" in NV control panel enabled.

 

I always have it set like that. I don't have any lssues with my other games. My rig is a beast with them. Maybe its my install?

[Mewle]

I always have it set like that. I don't have any lssues with my other games. My rig is a beast with them. Maybe its my install?

 

I'm not sure what you could mess with during the install that would have that effect. What windows are you running?

Edited June 18, 2013 by Mewle

[lanmancz]

How many units is there in the mission you're playing ? I think that's important. I bet that if you open mission editor and put your aircraft in an empty map the fps will be ok. I have far inferior PC to yours but I can still play with decent fps (about 30-40). The trick is that I'm playing mainly only my own missions where I put 50 units max (I'm using spawn scripts so I can always spawn more when I want). And it runs nice. The problem is that when there are lots of units in the mission the DCS becomes very cpu intensive and since the current engine does not utilize multiple cores (well it does but the second one is just for sound afaik) it becomes a problem. Hopefully when EDGE is released this will be solved and it will have full multicore support.

Edited June 18, 2013 by lanmancz

[Rotorhead]

Yes, lots of AI can hurt the performance quite a lot.

 

But what is weird, I have similar issues when looking at STATIC units, even if far away. I know that every unit in the FOV means lots of polygons to draw, but the FPS loss seems inadequate to me. BTW, that's what LOD's should be for, right?

 

Normally, I can maintain stable 30FPS (capped) even on pretty high settings, and 60+ on low. But with bigger number of static units in FOV, it easily drops to 20-25, no matter the settings. :dunno:

[Lib]

We didn't talked about that but... i hope you don't have any application running in the same time, like anti-virus, torrent, etc... if yes turn it off :huh:

[lanmancz]

We didn't talked about that but... i hope you don't have any application running in the same time, like anti-virus, torrent, etc... if yes turn it off :huh:

 

Nah, that's not it. Unless the antivirus is running some deep scan it cannot affect performance so much. I have it running in the background on my crap pc all the time and I have no such issue. As I said - at least for me the biggest fps impact (apart from cbu) is from the number of units in the mission.

[nigelmcelwee]

I usually do you disable my antivirus but I've never seen much of a performance difference either way considering how much RAM I have. I think its the amount of ai I have running that's killing the fps.

[Mewle]

I usually do you disable my antivirus but I've never seen much of a performance difference either way considering how much RAM I have. I think its the amount of ai I have running that's killing the fps.

 

 

So you're getting good FPS just on a basic flight with no AI?

[nigelmcelwee]

So you're getting good FPS just on a basic flight with no AI?

 

Oh yeah . My frames stay locked at my refresh rate 99 percent of the time. With ai its a slieshow. Static aircraft do it too. On the uh-1 startup procedure training mission I get 60 fps. If I look left down the flight line it drops to 45 instantly. If I look straight back or right I get 60 locked.

[xXNightEagleXx]

Oh yeah . My frames stay locked at my refresh rate 99 percent of the time. With ai its a slieshow. Static aircraft do it too. On the uh-1 startup procedure training mission I get 60 fps. If I look left down the flight line it drops to 45 instantly. If I look straight back or right I get 60 locked.

 

Classic! What happen here is a poor optimization that hit some setups! The simplification proportional to the distance is poorly implemented for some objects. In a few words, you see too much details when you shouldn't. This happen because there is no a a line separation between environment rendering and mfd's rendering so to avoid you to see awful objects they render through TGP or MAV they object at an excessive amount of detail but this create excessive overloading.

So it is not a matter of IA itself (CPU) or else it would struggle even when you don't watch them. It is just a matter of rendering engine, it is not optimized so it struggle at each non-static object added, the more you add the more the computer suffer to render them (graphics cards does not process what is not inside the FOV by definition - with a few exceptions like lights and shadows - that's why when you look the sky or the ground the FPS increase).

 

Now you might argue but my graphic card is a damn 780 gtx, it must handle it.....well that would fit perfectly in a bug free or optimized software, in this case we would never know surely the neck bottle resides within some basics of the engine where it leads to high performance drop according to some setups. Let's not forget the a newer video cards does not mean better DX support, in fact some old videocards behave much better with DX 9 (in proportion to the power) against a newer one.

Edited June 18, 2013 by xXNightEagleXx

[_Dredd]

You have a common rig to mine and I can agree I see those issues also when flying the A10C low. With ground clutter on, it gets even worse even with TSSAA off in NV.

Turn off transparency AA in NV panel as well.

My final results here which is best compromise for me with eye candy

 

http://forums.eagle.ru/showpost.php?p=1782253&postcount=20

[Mewle]

You have a common rig to mine and I can agree I see those issues also when flying the A10C low. With ground clutter on, it gets even worse even with TSSAA off in NV.

Turn off transparency AA in NV panel as well.

My final results here which is best compromise for me with eye candy

 

http://forums.eagle.ru/showpost.php?p=1782253&postcount=20

 

I don't get it. Check my spoiler, because it seems daft to me that I can get a steady 40+ fps with all high settings save for 4xAA, 512 cockpit, tssaa off. on my rig with ai. It's more like 50-60 when not viewing units/tight external fov. The only thing I have slow me down and by slow I'm talking SPF rather than FPS, are the CBU and MLRS munitions

 

Vis range is high and preload is in a sweetspot between quick load times and jerk free gameplay.

 

And then you got monster rigs so pwerful that suck in whole realities when they're turned on getting the same or even less performance.

 

Can't quite get my head around it:crash:

[BIGNEWY]

Its simple, until ED optimise all of the fps drop area's none of us will get steady FPS

[howie87]

Yeah, I get about 40-50fps on a mid range gaming rig I built 2 years ago.

 

No complaints from me.

 

EDGE will hopefully bring DX11 and multi core support though, which will improve things for everyone.