[Q] troubleshooting WiFi battery consumption. research done. - Android Q&A, Help & Troubleshooting

Hi guys, i flashed my rom to an updated official version not to long ago. after the flash i noticed WiFi is taking up 20-25% of my battery usage. battery life from full to naught is just 6 hours without any use. there's two other higher battery consuming items but they are cell standby and phone idle each at 25++%, but i learnt from my local LG O4X forum that they are nothing to worry about.
I tried to search over the internet for solutions which brought up serveral answers like:
wifi.supplicant_set_scan_interval=300 in build.prop (i had to create this line because there wasn't any, and doesn't help my problem. Line Deleted.)
then i realise whether the above works depends on
config.xml from a folder that also doesn't exists on my phone, which probably means wifi.supplicant_set_scan_interval=300 doesn't work at all.
Then from somewhere i learnt of another file wpa_supplicant.config in system/etc/wifi/
Inside this config file lies a whole load of #'ed texts that descripts what each line does but one caught my attention which is
Code:
# AP scanning/selection
# By default, wpa_supplicant requests driver to perform AP scanning and then
# uses the scan results to select a suitable AP. Another alternative is to
# allow the driver to take care of AP scanning and selection and use
# wpa_supplicant just to process EAPOL frames based on IEEE 802.11 association
# information from the driver.
# 1: wpa_supplicant initiates scanning and AP selection
# 0: driver takes care of scanning, AP selection, and IEEE 802.11 association
# parameters (e.g., WPA IE generation); this mode can also be used with
# non-WPA drivers when using IEEE 802.1X mode; do not try to associate with
# APs (i.e., external program needs to control association). This mode must
# also be used when using wired Ethernet drivers.
# 2: like 0, but associate with APs using security policy and SSID (but not
# BSSID); this can be used, e.g., with ndiswrapper and NDIS drivers to
# enable operation with hidden SSIDs and optimized roaming; in this mode,
# the network blocks in the configuration file are tried one by one until
# the driver reports successful association; each network block should have
# explicit security policy (i.e., only one option in the lists) for
# key_mgmt, pairwise, group, proto variables
[B]ap_scan=2[/B]
this is my current setting.
After trying all these my WiFi seems to be still taking up too much battery and at the 'show processes overlay' i still see 'wpa_supplicant' running on and off with approx 5 seconds intervals in between.
My only worry is the methods i've tried are not applicable for ICS, which my phone is. On the link i've attached there's this newer wpa_supplicant_8 version for ICS. How to determine which version im on?
There seems to be more and more ways to troubleshoot as i look further and further, but im not really willing to risk venturing into unknown area without knowledge. Are there any other ways to fix my WiFi consumption issue? i need a fix desperately.