Getting bad framerate

[chew]

Hi i have seen other threads about this and can't seem to get dcs to run smooth .

Every time I try playing I'm getting bad frame lag no matter what my setting are.

My computer spec are .

Core I7-2600k Quad core @ 4.8GHz

Asus P8Z68-V Pro motherboard

16GB KIngston Hyper-X Genesis dual DDR3 1600MHz

2GB Nvidia GeForce 560ti

120GB OCZ Vertex 3 SSD , Data 6GB/s

Corsair Hydro series H100i Extreme

Corsair 750w Enthusiast series TX750 V2-80

[dooom]

hey chew - i have a similar system to you... i ended up modifying the view distance and locked my frame rate at 30. I tried finding the thread i referenced with a few of these lua hacks but cant seem to find it.

 

i have an asus gpu so i cant help you there... i am also not running everything at max.

[Mustang]

The 4gb of RAM is definately holding you back, if you can try upping to 8gb or more and you'll notice a good difference :)

[chew]

Hey thanks ill give it a try with changing the NVIDIA Global 3D Settings and see what happens

[Lange_666]

Antialiasing - Gamma correction: On * I don't think this matters for DCS

 

Doesn't matter if it's "OFF" or "ON" since this setting is only for OpenGL. DCS is DirectX.

[chew]

I have tryed the setting and still getting no joy I'm still getting a lot of shutter . I even formatted the computer installed all drivers and dcs only .

[Manuel]

First of all... may you define bad framerate? 30fps is not bad for dcd....you should get better fps than 30 but not beyond 50. If you consider 50 as a bad framerate, because your bf3 framerate is up to 80 than the problem is there. Otherwise we have to look deeper into your system. 4,8Ghz is a monster. Do you OC?

 

Edit: As I did not see it in your signature: Do you have a 64bit OS ?

[chew]

Computer is OC to 4.8 my frames would be around 50 then when I'm coming onto a target are flying low I start to shutter and fps are jumping all over the place. Sorry win7 64bit

Edited January 19, 2013 by chew
os system

[Manuel]

64 bit OS ?

Are you using 2 Video Cards (SLI is not fully supported in DCS but there are solutions for that)

[chew]

Not running sli just one gtx 560ti 2gb . And win7 64bit pro.

[Manuel]

Well i see no mistakes in that system. What monitor configuration do you have? Settings, Resolution?

[chew]

HannsG HH221 22 inch LCD TFT monitor 300 cd/m², 1000:1, 1920 x 1080, 5ms, DVI-D . 16:9

[Manuel]

That is not the problem either. Check your CPU usage during flight and tell me how far does it go..

[chew]

Checked CPU usage and think it was 15%

[EtherealN]

Total CPU usage won't tell you much.

 

Your processor has 4 cores, and HT means it gets calculated as 8 cores. This means that one core maxed out is 12,5% "CPU usage", while 4 cores (that is, all of the actual cores) maxed out can show as anything between 50 and 100. Note that a single-thread application can never fully task your CPU, since it can run on one core only. Two-thread (like DCS) will thus have a theoretical max at half, but the second thread is sound engine only and thus extremely unlikely to max that core.

 

Is DCS on your SSD, and which SATA mode are you running it in? (You want it in AHCI.)

What's the situation with drivers? DxDiag.txt could help ensure that there's no funky business going on there.

Edited January 21, 2013 by EtherealN

[chew]

DCS is on the SSD drive and tthe SATA mode is IDE. driveers are all up todate and im using tuneup utilities

[SkateZilla]

HT will only hurt you in DCS.

 

DCS has never used more than 2 cores. on my machine.

 

You sub-plant a 2nd full time thread on the same core, and it takes a once 3Ghz core and turns it into Two 1.5Ghz Threads.

[SkateZilla]

DCS is on the SSD drive and tthe SATA mode is IDE. driveers are all up todate and im using tuneup utilities

 

SSDs should be AHCI

[SkateZilla]

make sure nVidia isnt allowing DCS to run on the intel HD3000 Graphics Core of the i7

[EtherealN]

You sub-plant a 2nd full time thread on the same core, and it takes a once 3Ghz core and turns it into Two 1.5Ghz Threads.

 

Not quite. It has basically duplicated the "input", which then analyzes what execution resources will be used by what we could call the "main" thread. Very often, you'll find that within each clock cycle a core will have some execution resources "free"; for example it might be way bogged down in integer work and have no floating point to do. In a normal, non-HT, situation, the FPU would then spend that particular clock cycle doing nothing at all.

 

HT looks for these occurances and allows a second thread to be in operation at the same time, to make sure that all execution resources will always be in use. It does not "slice" the processor up in two.

 

The logic happens in two places: the processor itself does it during fetch and decode, but Windows also does analysis on it's threads to make sure to place them in the right spot. Windows has as of late (say with Vista and newer, roughly) become pretty good at this. So you'll generally never see a performance loss from having HT enabled, even with 1-thread applications, though excepts may exist in certain cases.

 

The only problem here is that the standard utilities for watching computer performance, like the "Performance" tab on Windows Task Manager, will not be privy to which core is a real one and which one isn't - and to make it worse they report the usage as usage of all said cores: the 4 real ones as well as the 4 fake ones. Basically, Windows Task Manager (as well as Windows Resource Monitor) is not a good tool for judging performance load on multicore processors in general and HT'd ones in specific, unless the user is really careful about what he is looking for and knows how the underlying programs may operate in the multi-core/HT situation.

[chew]

I have tried to change the SSD to AHCI but everytime the computer boots it keeps crashing. Would I need to reinstall windows on the SSD drive on AHCI ?

[EtherealN]

I have tried to change the SSD to AHCI but everytime the computer boots it keeps crashing. Would I need to reinstall windows on the SSD drive on AHCI ?

 

Unfortunately, I believe so, yes. Which may be unecessarily inconvenient considering that we are not absolutely certain that this is the cause of your problems.

[SkateZilla]

well, i was trying to explain it gently, lol...

[SkateZilla]

I have tried to change the SSD to AHCI but everytime the computer boots it keeps crashing. Would I need to reinstall windows on the SSD drive on AHCI ?

 

http://support.microsoft.com/kb/922976

[chew]

Sure ill give it a try and see if that works :)