Battlefield 3 memory leak ?!

Hi,

Since the W8.1 update, Bf3 is nearly unplayable because of memory leaks in non-paged memory.

I don't know if it's windows, drivers, or just Bf, but it's very annoying. Please note that other heavy games (yes, even skyrim with a lot of 2k+ HD textures/150 mods) run fine on my computer, only Bf is causing issues.

I can play fine for 2-5 minutes, then windows is warning me that memory is low, asking to close Bf. If the memory leak continues, I may encounter a directX error, forcing BF to close.

RAM usage is fine (~5/8Gb used)

VRAM usage is fine (~900Mb used, 1.8Gb available in the intel iGPU, 4Gb in th nvidia dGPU)

CPU/GPU usage isn't too high

Only NP mem is abnormal, reaching 19.6Gb/20(?) after a few minutes. Maybe it is possible to increase NP size with regedit hack, but it won't fix the leak, just postpone the error 2-3 minutes later.

Computer specs are:

MSI GT60-2OD:

Intel core i7 4700mq (iHD Graphics 4600)

Nvidia GTX 780m

8Gb DDR3 RAM

Win 8.1 updated from w8 via windows store. (Don't tell me to rollback to w8 until you can tell me how to do this without uninstalling anything/loosing any app data.)

(http://www.msi.com/product/nb/GT60-2OD.html#specification)

Every component are up to date, from drivers to BIOS/Firmware, and origin/pb/bf, ...

Playing with pagefile doesn't seems to change anything.

Process explorer screenshot: http://img11.hostingpics.net/pics/932247Capturedcran33.png

Directx error: http://img4.hostingpics.net/pics/450776Capturedcran12.png

I've tried a LOT of things, from drivers update to running as administrator, disabling unneeded svc... Even asked to EA support in chat... Nothing.

I've seen that a similar error could happen on BF4, and may be solved by forcing BF4 to run in x86 with some options in origin. But they're nothing like this for BF3

Any ideas/fix (maybe a NP memory cleaner?)?

(sorry for the poor english...)

Thanks in advance!

Update:

It seems that ALT+TAB will free memory... But doing an alt+tab every minute is really boring. (NP mem feed rate is about 10Gb/minute on metro conquest 48P! )