[Galaxy S II General] nhmanas:
DO YOU SICK OF PLACEBO OR SLOWDOWN TWEAKS?

Then this tweaks are just for you and especially for your i9100

You can use this tweaks on other devices too but I don't know if they speedup so I guarantie only for i9100

WARNING: This changes may lead to soft brick. If you don't know how to recover it cry another thread!

I tested this tweaks on CM11 nightly and Lollipop. I published for stock roms too

NOOBS HERE:

1. Download build.prop editor on google play

2. Click on three dots and tap edit

3. Copy and paste my tweaks below existing lines

4. Be careful! First tweak says edit existing line!

5. REBOOT

WARNING: Check your build.prop file if you already have this tweaks! It is safe to paste directly all official cm builds and cm12 by [MENTION=6159291]Lysergic Acid[/MENTION] without confession

I get 4 and a half hour screen on time with this tweaks and apolo 7.2 kernel on kk (undervolted settings) WITHOUT LAG!

ONLY for 5.0.x and 5.1 (UPDATED - 18.04.2015)

I noticed a major bug on lollipop which caused by my tweaks! So I am publishing here only safe tweaks. Extreme users can use 4.4.4 tweaks on lollipop but their dalvik cache will clear on (almost) every boot (they have warned). Some of tweaks which causes this bug are have negative effect on kitkat (just on boot) but it is not harmful on a rusty os compared to lollipop. I can live with that.

#Nhmanas

######WARNING#######
#Edit existing lines
wifi.supplicant_scan_interval=9000
ro.telephony.call_ring.delay=0
###DON'T FORGET TO EDIT UP THERE##

# Power Saving Tweaks
ro.ril.disable.power.collapse=0
pm.sleep_mode=1

# Dialing Tweaks
ro.lge.proximity.delay=25
mot.proximity.delay=25

[/HIDE]

FOR 4.0.x to 4.4.4 (CHECK ALL WARNINGS AGAIN STOP ASKING SILLY QUESTIONS) (UPDATED - 09.03.2015)

NEATROM TW USERS USE SAMMY TWEAKS FROM NOW

Massive update!! Changelog for both:

Camera issues fixed

Sound tweaks added

#Nhmanas

######WARNING######
#
#Edit existing lines
dalvik.vm.dexopt-flags=o=y,m=y,v=n
wifi.supplicant_scan_interval=9000
ro.telephony.call_ring.delay=0
#
##DON'T FORGET TO EDIT UP THERE##

# System Tweaks
ro.HOME_APP_ADJ=1
ro.mot.eri.losalert.delay=1000
ro.config.hw_fast_dormancy=0
ro.ril.enable.amr.wideband=1

# Miscellaneous Tweaks
persist.sys.NV_FPSLIMIT=90
ro.config.hw_power_saving=true
ro.mot.buttonlight.timeout=1

# Signal Tweaks
ro.ril.hsxpa=1
ro.ril.gprsclass=10
ro.ril.hsdpa.category=8
ro.ril.hsupa.category=6
persist.cust.tel.eons=1

# Wireless Speed Tweaks
net.tcp.buffersize.default=4096,87380,256960,4096,16384,256960
net.tcp.buffersize.wifi=4096,87380,256960,4096,16384,256960
net.tcp.buffersize.umts=4096,87380,256960,4096,16384,256960
net.tcp.buffersize.gprs=4096,87380,256960,4096,16384,256960
net.tcp.buffersize.edge=4096,87380,256960,4096,16384,256960
net.ipv4.tcp_ecn=0
net.ipv4.route.flush=1
net.ipv4.tcp_rfc1337=1
net.ipv4.ip_no_pmtu_disc=0
net.ipv4.tcp_sack=1
net.ipv4.tcp_fack=1
net.ipv4.tcp_window_scaling=1
net.ipv4.tcp_timestamps=1
net.ipv4.tcp_rmem=4096 39000 187000
net.ipv4.tcp_wmem=4096 39000 187000
net.ipv4.tcp_mem=187000 187000 187000
net.ipv4.tcp_no_metrics_save=1
net.ipv4.tcp_moderate_rcvbuf=1

# Makes streaming videos stream faster
media.stagefright.enable-player=true
media.stagefright.enable-meta=true
media.stagefright.enable-scan=true
media.stagefright.enable-http=true
media.stagefright.enable-record=true

# Website Bypass
net.rmnet0.dns1=8.8.8.8
net.rmnet0.dns2=8.8.4.4
net.dns1=8.8.8.8
net.dns2=8.8.4.4

#Graphics
ro.media.dec.jpeg.memcap=20000000
ro.media.enc.hprof.vid.bps=8000000
ro.media.enc.jpeg.quality=100

# Disables data sent and logging
ro.config.nocheckin=1
profiler.force_disable_err_rpt=1
profiler.force_disable_ulog=1

# Scrolling Responsiveness
windowsmgr.max_events_per_sec=90

# Power Saving Tweaks
ro.ril.disable.power.collapse=0
pm.sleep_mode=1

# Dialing Tweaks
ro.telephony.call_ring.delay=0
ro.lge.proximity.delay=25
mot.proximity.delay=25

# Performance
ro.max.fling_velocity=20000
ro.min.fling_velocity=18000
debug.kill_allocating_task=0
persist.sys.purgeable_assets=1
persist.sys.use_dithering=1
ro.secure=0
ro.min_pointer_dur=1

# 16bit Transparency
persist.sys.use_16bpp_alpha=1

#Misc
persist.sys.shutdown.mode=hibernate
persist.radio.add_power_save=1
ro.semc.enable.fast_dormancy=false
ro.config.hw_quickpoweron=true
ro.ril.sensor.sleep.control=1
power_supply.wakeup=enable
persist.android.strictmode=0
ro.kernel.android.checkjni=0
ro.kernel.checkjni=0
ro.compcache.default=0
dalvik.vm.execution-mode=int:jit
dalvik.vm.verify-bytecode=true
dalvik.vm.jmiopts=forcecopy
ro.ext4fs=1
ro.setupwizard.mode=DISABLED
dalvik.vm.heaputilization=0.25
dalvik.vm.heaptargetutilization=0.75

###AC!D Sound Tweaks by TEAM AC!D EDITED BY NHMANAS###
ro.audio.samplerate=48000
persist.audio.vr.enable=false
persist.htc.audio.pcm.samplerate=48000
htc.audio.swalt.enable=1
htc.audio.swalt.mingain=14512
htc.audio.alc.enable=1
af.resample=52000
persist.audio.SupportHTCHWAEC=1
ro.service.swiqi2.supported=true
persist.service.swiqi2.enable=1

#Sony Xloud & Clearbass +
ro.semc.sound_effects_enabled=true
ro.semc.xloud.supported=true
persist.service.xloud.enable=1
ro.semc.enhance.supported=true
persist.service.enhance.enable=1
ro.semc.clearaudio.supported=true
persist.service.clearaudio.enable=1
ro.sony.walkman.logger=1
persist.service.walkman.enable=1
ro.somc.clearphase.supported=true
persist.service.clearphase.enable=1

#Resampling
af.resampler.quality=255
persist.af.resampler.quality=255
persist.dev.pm.dyn_samplingrate=1

#System prop to select MPQAudioPlayer by default on mpq8064
mpq.audio.decode=true

#Awesome Beats Engine
persist.audio.fluence.mode=endfire
persist.audio.hp=true
htc.audio.global.state=0
htc.audio.lpa.a2dp=0
htc.audio.global.profile=0
htc.audio.q6.topology=0
htc.audio.enable_dmic=1
persist.htc.audio.pcm.channels=2
persist.service.adb.enable=1

Not necesary but here is a little advice for AOSP. Use 211 dpi screen by editing

ro.sf.lcd_density=240 to

ro.sf.lcd_density=211 and you have smaller and better nexusish look for i9100

NEW: SAMMY 4.1.2 STABLE TWEAKS!! (UPDATED 09.03.2015)

#Nhmanas (FOR STOCK 4.1.2)

######WARNING######
#
#Edit existing lines
wifi.supplicant_scan_interval=9000
ro.telephony.call_ring.delay=0
#
##DON'T FORGET TO EDIT UP THERE##

#Sammy
debug.sf.hw=1
video.accelerate.hw=1

# System Tweaks
ro.HOME_APP_ADJ=1
ro.mot.eri.losalert.delay=1000
ro.config.hw_fast_dormancy=0
ro.ril.enable.amr.wideband=1

# Miscellaneous Tweaks
persist.sys.NV_FPSLIMIT=90
ro.config.hw_power_saving=true
ro.mot.buttonlight.timeout=1

# Signal Tweaks
ro.ril.hsxpa=1
ro.ril.gprsclass=10
ro.ril.hsdpa.category=8
ro.ril.hsupa.category=6
persist.cust.tel.eons=1

# Wireless Speed Tweaks
net.tcp.buffersize.default=4096,87380,256960,4096,16384,256960
net.tcp.buffersize.wifi=4096,87380,256960,4096,16384,256960
net.tcp.buffersize.umts=4096,87380,256960,4096,16384,256960
net.tcp.buffersize.gprs=4096,87380,256960,4096,16384,256960
net.tcp.buffersize.edge=4096,87380,256960,4096,16384,256960
net.ipv4.tcp_ecn=0
net.ipv4.route.flush=1
net.ipv4.tcp_rfc1337=1
net.ipv4.ip_no_pmtu_disc=0
net.ipv4.tcp_sack=1
net.ipv4.tcp_fack=1
net.ipv4.tcp_window_scaling=1
net.ipv4.tcp_timestamps=1
net.ipv4.tcp_rmem=4096 39000 187000
net.ipv4.tcp_wmem=4096 39000 187000
net.ipv4.tcp_mem=187000 187000 187000
net.ipv4.tcp_no_metrics_save=1
net.ipv4.tcp_moderate_rcvbuf=1

# Makes streaming videos stream faster
media.stagefright.enable-player=true
media.stagefright.enable-meta=true
media.stagefright.enable-scan=true
media.stagefright.enable-http=true
media.stagefright.enable-record=true

# Website Bypass
net.rmnet0.dns1=8.8.8.8
net.rmnet0.dns2=8.8.4.4
net.dns1=8.8.8.8
net.dns2=8.8.4.4

#Graphics
ro.media.dec.jpeg.memcap=20000000
ro.media.enc.hprof.vid.bps=8000000
ro.media.enc.jpeg.quality=100

# Disables data sent and logging
ro.config.nocheckin=1
profiler.force_disable_err_rpt=1
profiler.force_disable_ulog=1

# Scrolling Responsiveness
windowsmgr.max_events_per_sec=90

# Power Saving Tweaks
ro.ril.disable.power.collapse=0
pm.sleep_mode=1

# Dialing Tweaks
ro.telephony.call_ring.delay=0
ro.lge.proximity.delay=25
mot.proximity.delay=25

# Performance
ro.max.fling_velocity=20000
ro.min.fling_velocity=18000
debug.kill_allocating_task=0
persist.sys.purgeable_assets=1
persist.sys.use_dithering=1
ro.secure=0
ro.min_pointer_dur=1

# 16bit Transparency
persist.sys.use_16bpp_alpha=1

#Misc
persist.sys.shutdown.mode=hibernate
persist.radio.add_power_save=1
ro.semc.enable.fast_dormancy=false
ro.config.hw_quickpoweron=true
ro.ril.sensor.sleep.control=1
power_supply.wakeup=enable
persist.android.strictmode=0
ro.kernel.android.checkjni=0
ro.kernel.checkjni=0
ro.compcache.default=0
dalvik.vm.execution-mode=int:jit
dalvik.vm.verify-bytecode=true
dalvik.vm.jmiopts=forcecopy
ro.ext4fs=1
ro.setupwizard.mode=DISABLED
dalvik.vm.heaputilization=0.25
dalvik.vm.heaptargetutilization=0.75

###AC!D Sound Tweaks by TEAM AC!D EDITED BY NHMANAS###
ro.audio.samplerate=48000
persist.audio.vr.enable=false
persist.htc.audio.pcm.samplerate=48000
htc.audio.swalt.enable=1
htc.audio.swalt.mingain=14512
htc.audio.alc.enable=1
af.resample=52000
persist.audio.SupportHTCHWAEC=1
ro.service.swiqi2.supported=true
persist.service.swiqi2.enable=1

#Sony Xloud & Clearbass +
ro.semc.sound_effects_enabled=true
ro.semc.xloud.supported=true
persist.service.xloud.enable=1
ro.semc.enhance.supported=true
persist.service.enhance.enable=1
ro.semc.clearaudio.supported=true
persist.service.clearaudio.enable=1
ro.sony.walkman.logger=1
persist.service.walkman.enable=1
ro.somc.clearphase.supported=true
persist.service.clearphase.enable=1

#Resampling
af.resampler.quality=255
persist.af.resampler.quality=255
persist.dev.pm.dyn_samplingrate=1

#System prop to select MPQAudioPlayer by default on mpq8064
mpq.audio.decode=true

#Awesome Beats Engine
persist.audio.fluence.mode=endfire
persist.audio.hp=true
htc.audio.global.state=0
htc.audio.lpa.a2dp=0
htc.audio.global.profile=0
htc.audio.q6.topology=0
htc.audio.enable_dmic=1
persist.htc.audio.pcm.channels=2
persist.service.adb.enable=1

DON'T FORGET TO EDIT EXISTING LINES

Some members got confused how to do this so here is my build.prop for example (this can be old after updates. Anyways just an example)

WARNING!!! DO NOT PASTE MY BUILD.PROP FILE DIRECTLY! THIS MAY LEAD SOFT BRICK IF WE DON'T HAVE SAME ROM

# begin build properties
# autogenerated by buildinfo.sh
ro.build.id=LRX22G
ro.build.display.id=cm_i9100-userdebug 5.0.2 LRX22G f4d0a59c9e test-keys
ro.build.version.incremental=f4d0a59c9e
ro.build.version.sdk=21
ro.build.version.codename=REL
ro.build.version.all_codenames=REL
ro.build.version.release=5.0.2
ro.build.date=Qua Fev 11 01:50:36 BRST 2015
ro.build.date.utc=1423626636
ro.build.type=userdebug
ro.build.user=lysergic_acid
ro.build.host=Caio
ro.build.tags=test-keys
ro.product.brand=Samsung
ro.product.name=GT-I9100
ro.product.board=smdk4210
# ro.product.cpu.abi and ro.product.cpu.abi2 are obsolete,
# use ro.product.cpu.abilist instead.
ro.product.cpu.abi=armeabi-v7a
ro.product.cpu.abi2=armeabi
ro.product.cpu.abilist=armeabi-v7a,armeabi
ro.product.cpu.abilist32=armeabi-v7a,armeabi
ro.product.cpu.abilist64=
ro.product.manufacturer=samsung
ro.product.locale.language=en
ro.product.locale.region=US
ro.wifi.channels=
ro.board.platform=exynos4
# ro.build.product is obsolete; use ro.product.device
ro.build.product=GT-I9100
ro.product.model=GT-I9100
ro.product.device=GT-I9100
# Do not try to parse description, fingerprint, or thumbprint
ro.build.description=GT-I9100-user 4.1.2 JZO54K I9100XWMS2 release-keys
ro.build.fingerprint=samsung/GT-I9100/GT-I9100:4.1.2/JZO54K/I9100XWMS2:user/release-keys
ro.build.characteristics=default
ro.cm.device=i9100
# end build properties
#
# from device/samsung/i9100/system.prop
#
# system.prop for i9100

rild.libpath=/system/lib/libsec-ril.so
rild.libargs=-d /dev/ttyS0

# Media
media.stagefright.use-awesome=false
persist.sys.media.use-awesome=true

# Dalvik
persist.sys.dalvik.multithread=true
dalvik.vm.dexopt-data-only=1

#
# ADDITIONAL_BUILD_PROPERTIES
#
ro.rommanager.developerid=cyanogenmod
ro.com.google.clientidbase=android-google
keyguard.no_require_sim=true
ro.url.legal=http://www.google.com/intl/%s/mobile/android/basic/phone-legal.html
ro.url.legal.android_privacy=http://www.google.com/intl/%s/mobile/android/basic/privacy.html
ro.com.android.wifi-watchlist=GoogleGuest
ro.setupwizard.enterprise_mode=1
ro.com.android.dateformat=MM-dd-yyyy
ro.com.android.dataroaming=false
ro.build.selinux=1
persist.sys.dun.override=0
persist.sys.root_access=0
ro.cm.version=12-20150211-UNOFFICIAL-i9100
ro.cm.releasetype=UNOFFICIAL
ro.modversion=12-20150211-UNOFFICIAL-i9100
ro.cmlegal.url=https://www.cyanogenmod.org/docs/privacy
persist.sys.recovery_update=false
ro.cm.display.version=12-20150211-UNOFFICIAL-i9100
ro.config.notification_sound=Argon.ogg
ro.config.alarm_alert=Hassium.ogg
ro.config.ringtone=Orion.ogg
ro.carrier=unknown
wifi.interface=wlan0
wifi.supplicant_scan_interval=9000
ro.opengles.version=131072
ro.zygote.disable_gl_preload=true
ro.bq.gpu_to_cpu_unsupported=1
debug.hwui.render_dirty_regions=false
ro.telephony.ril_class=SamsungExynos4RIL
mobiledata.interfaces=pdp0,gprs,ppp0,rmnet0,rmnet1
ro.telephony.call_ring.multiple=false
ro.telephony.call_ring.delay=3000
dalvik.vm.heapstartsize=5m
dalvik.vm.heapgrowthlimit=48m
dalvik.vm.heapsize=128m
dalvik.vm.heaptargetutilization=0.75
dalvik.vm.heapminfree=512k
dalvik.vm.heapmaxfree=2m
ro.sf.lcd_density=211
persist.sys.dalvik.vm.lib.2=libart.so
dalvik.vm.isa.arm.features=default
dalvik.vm.lockprof.threshold=500
dalvik.vm.dexopt-flags=o=y,m=y,v=n
net.bt.name=Android
dalvik.vm.stack-trace-file=/data/anr/traces.txt

# System Tweaks
ro.HOME_APP_ADJ=1
ro.mot.eri.losalert.delay=1000
ro.config.hw_fast_dormancy=0
ro.ril.enable.amr.wideband=1

# Miscellaneous Tweaks
persist.sys.NV_FPSLIMIT=90
ro.config.hw_power_saving=true
ro.media.enc.hprof.vid.fps=65
ro.mot.buttonlight.timeout=1

# Signal Tweaks
ro.ril.hsxpa=1
ro.ril.gprsclass=10
ro.ril.hsdpa.category=8
ro.ril.hsupa.category=6
persist.cust.tel.eons=1

# Wireless Speed Tweaks
net.tcp.buffersize.default=4096,87380,256960,4096,16384,256960
net.tcp.buffersize.wifi=4096,87380,256960,4096,16384,256960
net.tcp.buffersize.umts=4096,87380,256960,4096,16384,256960
net.tcp.buffersize.gprs=4096,87380,256960,4096,16384,256960
net.tcp.buffersize.edge=4096,87380,256960,4096,16384,256960
net.ipv4.tcp_ecn=0
net.ipv4.route.flush=1
net.ipv4.tcp_rfc1337=1
net.ipv4.ip_no_pmtu_disc=0
net.ipv4.tcp_sack=1
net.ipv4.tcp_fack=1
net.ipv4.tcp_window_scaling=1
net.ipv4.tcp_timestamps=1
net.ipv4.tcp_rmem=4096 39000 187000
net.ipv4.tcp_wmem=4096 39000 187000
net.ipv4.tcp_mem=187000 187000 187000
net.ipv4.tcp_no_metrics_save=1
net.ipv4.tcp_moderate_rcvbuf=1

# Makes streaming videos stream faster
media.stagefright.enable-player=true
media.stagefright.enable-meta=true
media.stagefright.enable-scan=true
media.stagefright.enable-http=true
media.stagefright.enable-record=true

# Website Bypass
net.rmnet0.dns1=8.8.8.8
net.rmnet0.dns2=8.8.4.4
net.dns1=8.8.8.8
net.dns2=8.8.4.4

#Graphics
ro.media.dec.jpeg.memcap=20000000
ro.media.enc.hprof.vid.bps=8000000
ro.media.enc.jpeg.quality=100

# Disables data sent and logging
ro.config.nocheckin=1
profiler.force_disable_err_rpt=1
profiler.force_disable_ulog=1

# Scrolling Responsiveness
windowsmgr.max_events_per_sec=90
persist.cust.tel.eons=1

# Power Saving Tweaks
ro.ril.disable.power.collapse=1
pm.sleep_mode=1

# Dialing Tweaks
ro.telephony.call_ring.delay=0
ro.lge.proximity.delay=25
mot.proximity.delay=25

# Performance
ro.max.fling_velocity=20000
ro.min.fling_velocity=18000
profiler.force_disable_err_rpt=1
profiler.force_disable_ulog=1
ro.min_pointer_dur=8
debug.kill_allocating_task=0
persist.sys.purgeable_assets=1
persist.sys.use_dithering=1
ro.secure=0
ro.min_pointer_dur=1

# 16bit Transparency
persist.sys.use_16bpp_alpha=1

#Misc
persist.sys.shutdown.mode=hibernate
persist.radio.add_power_save=1
ro.semc.enable.fast_dormancy=false
ro.config.hw_quickpoweron=true
ro.ril.sensor.sleep.control=1
power_supply.wakeup=enable
persist.android.strictmode=0
ro.kernel.android.checkjni=0
ro.kernel.checkjni=0
ro.compcache.default=0
dalvik.vm.execution-mode=int:jit
dalvik.vm.verify-bytecode=true
dalvik.vm.jmiopts=forcecopy
ro.ext4fs=1
ro.setupwizard.mode=DISABLED
dalvik.vm.heaputilization=0.25
dalvik.vm.heaptargetutilization=0.75

Here is little FAQ

Q: If I am going to use this tweaks what will change on my phone?

A: This tweaks for batter batery, lighter phone, butter smooth UI and faster app load. If you are good abserver you will notice the change.

Q: Every build.prop tweaker advices GPU rendering why don't you?

A for AOSP: Our little monster have heating problem. My purpose is speeding up this device without heating and ofcourse GPU rendering uses more battery (about %25 more from my tests on AOSP roms)

A for SAMMY: Yes, I added gpu rendering on sammy. Because there is no heating problem on stock (even colder). And we get great ui experience with less battery drain (compared to aosp. Btw this drain is very small and these lines are worth to use)

Q: OMG! This tweaks are awesome how can I thank you?

A: Oh.. Don't embarress me just press thanks button :o

GUIDE FOR BUILD.PROP FILE:

This tweaks disappear when you update your rom or if you flash new rom or if you format /system

If you do one of them you have to re-paste this tweaks.

Check twice your buid.prop file if you have this tweaks already. Delete stock line if it is opposite value.

DO NOT DELETE ALL LINES just paste this tweaks below them.

If you experience random reboot or just phone power off after this tweaks clear cache and dalvik (adding v=n will boost first dalvik caching process).

How to update my tweaks? This tweaks are frequently updating. If you want to update them just delete my tweaks (NOT WHOLE LINES) then paste new tweaks.

These are not my tweaks I didn't invent them. But I gather them slowly, BEST for our i9100. It took my 6 months to test all the tweaks and combine them.

If I helped you please press THANKS button.