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BF3 CPU Spikes

Last response: in Video Games
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December 28, 2011 11:15:37 AM

Hey,

I'm getting weird cpu spikes that seem rather constant throughout the game (every 2-3 seconds), which causes the game to microstutter.

I tried formatting the hdd, installing a fresh copy of windows 7 and only chrome, bf3 and an anti-virus (disabled during the game). Also defragmented the (almost empty) hdd. Same issue. This even happens between matches (when only the scoreboard is displayed).

Tried playing with:

RenderDevice.ForceRenderAheadLimit to 1/2/3 -- limited effect. Spikes are still there, but they seem to occur at half the strength (~50 instead of ~90).
RenderDevice.TripleBufferingEnable to 0 -- no effect
Vsync on (with triple buffering) -- spikes occur more often, less than 1 second apart


I also disabled Origin in-game.

My system:

Athlon II X4 630 (4 cores at 2.8GHz, Cool'N'Quiet disabled)
4GB DDR3 RAM @ 1333MHz
ATI HD 5770, 1GB DDR5 (disabled tesselation and catalyst ai)
AMD 870 chipset
1TB HDD @ SATA3

Here are some screenshots:

During deploy screen:
http://img515.imageshack.us/img515/5227/screenshotwin320001.png

Between matches:
http://img337.imageshack.us/img337/9453/screenshotwin320003x.png

During gameplay:
http://img215.imageshack.us/img215/7404/screenshotwin320004.png


I am pretty sure the graphics board plays no role in this, as I tried playing the game at 640x480 all setting low, with the same spikes occuring. Again, this is with a fresh install of windows 7 on a formatted hdd, with only chrome and an anti-virus installed (the latter which was disabled during the test). Windows has been fully updated and I am using the latest drivers.

More about : bf3 cpu spikes

December 28, 2011 3:05:35 PM

windows power settings set to max performance/always on and all that?
December 28, 2011 3:21:27 PM

It is now, no difference. Also tried killing any process I could, including Origin and EACoreServer. Also tried GameBooster. No joy.

I see this guy here seems to have the same problem: http://www.youtube.com/watch?v=FbLB9T44Wis

No idea what I could try on next.

With the game on, CPU sits at about 60-70%, ram is at 60%.

Cheers
December 31, 2011 7:57:53 AM

Having the same/a very similar problem with this build:

Intel Core i3 2100 CPU
HD 6850
650w PSU
P67a-G43 MSI board
8GB DDR3 RAM

Have tried fresh installs, changing RAM, driver swaps, etc to no avail. Probably a software problem?
!