CPU performance low - PR fps low...

Help and support regarding PR:BF2 installation and in-game issues
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PatrickLA_CA
Posts: 2243
Joined: 2009-07-14 09:31

CPU performance low - PR fps low...

Post by PatrickLA_CA »

I had this a long time ago but I reminded to post it up here now

So my problem is that when I play on certain maps like Fallujah West I get 15 fps and my CPU isn't working even 50% of its power....

I set the power options to high performance but it's still the same..
I can play on all other maps on all high and I get that problem on Fallujah even on low graphics...

Here is my rig:

OS: Windows 7

CPU: Intel Pentium D 3.00 GHz

RAM Memory: 3GB DDR2

Video Card: Nvidia Geforce 9600T 512mb up to 1GB DDR3

Any help is appreciated.
In-game: Cobra-PR
TheComedian
Posts: 677
Joined: 2011-01-08 13:46

Re: CPU performance low - PR fps low...

Post by TheComedian »

It's the map not your PC. Fallujah can be a slideshow sometimes.
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=]H[= Apollo
Posts: 74
Joined: 2011-03-13 22:22

Re: CPU performance low - PR fps low...

Post by =]H[= Apollo »

Even with the most expensive rig can get 15 fps
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Psyrus
Retired PR Developer
Posts: 3841
Joined: 2006-06-19 17:10

Re: CPU performance low - PR fps low...

Post by Psyrus »

You'll find the more scary thing is when your fps are low that your graphics card is hardly working at 50% on maps like fallujah, yet when yolook straight up to the sky your fps will skyrocket but so will your gpu usage. So to render lots of objects our gpus are not working at full capacity thus we get low fps, and when the scene has very little to render the gpus ramp up to 100% and we great fps... It's supposed to be the other way around >_<
PatrickLA_CA
Posts: 2243
Joined: 2009-07-14 09:31

Re: CPU performance low - PR fps low...

Post by PatrickLA_CA »

Ye, I was asking for a way to make it work with 100% or I'll sell the half of my CPU :P
In-game: Cobra-PR
LithiumFox
Posts: 2334
Joined: 2007-07-08 18:25

Re: CPU performance low - PR fps low...

Post by LithiumFox »

Actually, according to random posts, it's when you have a higher amount of FPS that your GPU is used more. ;)

Some of the scene gets rendered on the CPU, then it goes to the GPU for final processing apparently.

So

CPU->15fps->GPU->lower usage as less incoming frames

CPU->100pfs->GPU->Higher usage since more frames

I assume it renders the basic frame then sends it to the gpu for pixel-shader shadowing and Anti-Aliasing and such. (cause BF2 is surprisingly heavily CPU dependent, but you can get a major improvement with a better GPU... o.O it really doesn't seem to make much sense haha.)


At least, that's what i gathered from some research i did about why my GPU wasn't being used as much in BF2 a while back

It's really only a BF2 thing... ^^;; how they seemed to have programmed it.

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Pedz
Posts: 696
Joined: 2009-05-07 20:05

Re: CPU performance low - PR fps low...

Post by Pedz »

I can safely say there isn't anything wrong with it using 50%, my latest rig barely goes over 20% cpu usage, but sticks at 30fps in some places or even 15... I'm not 100% to what's causing it really, because nothing has much load on it, it just seems to be how its programmed, maybe the delay between component communication I dunno, but something about those buildings :P

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killonsight95
Posts: 2123
Joined: 2009-03-22 13:06

Re: CPU performance low - PR fps low...

Post by killonsight95 »

doesn't BF2 just not use more than one core? that might be the problem here
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Pedz
Posts: 696
Joined: 2009-05-07 20:05

Re: CPU performance low - PR fps low...

Post by Pedz »

killonsight95 wrote:doesn't BF2 just not use more than one core? that might be the problem here
Im not sure about that, it seems to be loading 4 cores on my PC... all about 25% each. If i set bf2 to only use 1 core, it fully loads it :P . So yes very CPU intensive.(running at 4.3Ghz). Time to OC more and see how much PR wants :P
Last edited by Pedz on 2011-05-22 12:35, edited 1 time in total.

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Atkinson
Posts: 357
Joined: 2011-02-10 21:02

Re: CPU performance low - PR fps low...

Post by Atkinson »

This fps drop was the things I noticed first in PR. Afaik it is just that some maps (or PR code itself) is not that optimized. Hopefully devs will fix this in the future.
killonsight95
Posts: 2123
Joined: 2009-03-22 13:06

Re: CPU performance low - PR fps low...

Post by killonsight95 »

how do i check how amny cores a program is using on win 7?
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Pedz
Posts: 696
Joined: 2009-05-07 20:05

Re: CPU performance low - PR fps low...

Post by Pedz »

killonsight95 wrote:how do i check how amny cores a program is using on win 7?
Task, and go to performance. You'll see the load on each core/thread. I see about 10-15% on 4 cores, the other 4 threads empty. But yes this game is VERY CPU intensive, even 4.5Ghz isn't enough ^^, and im not willing to risk frying my CPU to reach 5ghz..

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