BF3 lag

casual123 · 30 Sep 2012 at 00:11

Recently upgraded to crossfire with my 6850s and am getting lagspikes, no microstutter though, any help? :/ cheers

Spenty · 30 Sep 2012 at 00:16

Settings? and Resolution?

mickyflinn · 30 Sep 2012 at 00:18

And spec .

casual123 · 30 Sep 2012 at 03:43

AMD Phenom II X4 B50 Processor @ 3.5ghz
AMD 6850 CF
4GB Kingston hyperx 1333mhz DDR3 ram
Asus m4a785tdv-evo Motherboard
Coolermaster silent pro 700w Modular Power supply
ocz agility ssd 60gb & 80GB Sata Harddrive & WD 1tb
Sata DVD-rw
Asus royal knight cpu cooler

ive tried both high and ultra and changed various settings but still getting the spikes 1680x1050

humbug · 30 Sep 2012 at 03:47

Do you know what your CPU usage is?

Try overclocking it some more, also overclock the CPU-NB to 2600 / 2800 Mhz if you can. see if that helps.

LtMatt · 30 Sep 2012 at 09:55

Overclock your processor.

You can also try this.

Create a user.cfg (save as all files not a txt file) file and place it in the battlefield 3 main folder.

Copy and paste these commands in the config.

RenderDevice.ForceRenderAheadLimit 1
RenderDevice.TripleBufferingEnable 1
RenderDevice.VSyncEnable 1
gametime.maxvariablefps 59

Does that improve your situation?

old gamer · 30 Sep 2012 at 10:59

Could be cpu bottleneck because of the 1680x1050 res, if you know anyone with a 1920x1080 ask them them if you can test your pc on it.

Alkalinepro5 · 30 Sep 2012 at 11:20

casual123 said:
AMD Phenom II X4 B50 Processor @ 3.5ghz
AMD 6850 CF
4GB Kingston hyperx 1333mhz DDR3 ram
Asus m4a785tdv-evo Motherboard
Coolermaster silent pro 700w Modular Power supply
ocz agility ssd 60gb & 80GB Sata Harddrive & WD 1tb
Sata DVD-rw
Asus royal knight cpu cooler

ive tried both high and ultra and changed various settings but still getting the spikes 1680x1050

I can tell you right now you are maxing VRAM. You can run High on 6850's easy, but kill the AA! The rest of your rig is fine brah

casual123 · 30 Sep 2012 at 13:44

humbug said:
Do you know what your CPU usage is?

Try overclocking it some more, also overclock the CPU-NB to 2600 / 2800 Mhz if you can. see if that helps.

ive overclocked to 3.6 now and im not sure about the cpu/nb because i cant actually see the mhz, theres just multipliers? what shall i put it on? cheers

casual123 · 30 Sep 2012 at 14:03

tried new drivers and even on low settings im getting fps drops and spikes :/ doing my head in now

LtMatt · 30 Sep 2012 at 14:10

casual123 said:
tried new drivers and even on low settings im getting fps drops and spikes :/ doing my head in now

Try what i said please and report back. Also use no higher than the HIGH setting preset as you're limited by vram.

humbug · 30 Sep 2012 at 14:11

casual123 said:
tried new drivers and even on low settings im getting fps drops and spikes :/ doing my head in now

The CPU-NB is a multiplier, i don't know your motherboard so i can't say where or what it is.

I think you have a CPU bottleneck.

Overclocking it on Phenom II's will give you about 10% higher performance.

Can you run it at 1920 x 1080? if so do it and set GFX to high with no AA

casual123 · 30 Sep 2012 at 16:39

LtMatt said:
Overclock your processor.

You can also try this.

Create a user.cfg (save as all files not a txt file) file and place it in the battlefield 3 main folder.

Copy and paste these commands in the config.

RenderDevice.ForceRenderAheadLimit 1
RenderDevice.TripleBufferingEnable 1
RenderDevice.VSyncEnable 1
gametime.maxvariablefps 59

Does that improve your situation?

Just tried this , still no luck :c thanks though!

Final8y · 30 Sep 2012 at 17:33

casual123 said:
Just tried this , still no luck :c thanks though!

Did you check in the in game console that they were applied.

casual123 · 30 Sep 2012 at 20:43

Final8y said:
Did you check in the in game console that they were applied.

How can I do this?

I've just ordered 8gb of ram would that help at all? Replacing my 4gb I have at the mo

Final8y · 30 Sep 2012 at 21:01

Hit the ` key, then type RenderDevice or part of it and you can hit Tab to auto complete, then you start typing ForceRenderAheadLimit or part of it and you can hit Tab to auto complete that part as well, if you then hit Enter without adding a numerical value, it well tell you the current running numerical value.

Do that for all 4 one at a time.

casual123 · 30 Sep 2012 at 22:06

Final8y said:
Hit the ` key, then type RenderDevice or part of it and you can hit Tab to auto complete, then you start typing ForceRenderAheadLimit or part of it and you can hit Tab to auto complete that part as well, if you then hit Enter without adding a numerical value, it well tell you the current running numerical value.

Do that for all 4 one at a time.

just done this, seems that the config didnt work for some reason? but when entering these into the console the game did run a bit better, less lag spikes but still getting them, moved settings down to high but still getting a disapointing 40-50 fps on big maps

LtMatt · 30 Sep 2012 at 22:14

casual123 said:
just done this, seems that the config didnt work for some reason? but when entering these into the console the game did run a bit better, less lag spikes but still getting them, moved settings down to high but still getting a disapointing 40-50 fps on big maps

Download this file and place it in your battlefield 3 main folder.

http://www.sendspace.com/file/fm5q61

casual123 · 30 Sep 2012 at 22:21

LtMatt said:
Download this file and place it in your battlefield 3 main folder.

http://www.sendspace.com/file/fm5q61

thanks, that worked but still getting pretty bad performance :c

LtMatt · 30 Sep 2012 at 22:25

casual123 said:
thanks, that worked but still getting pretty bad performance :c

What in game settings are you using?

You would benefit from overclocking your cpu to at least 4ghz.