[Galaxy Y GT-S5360 and Duos 6102 Q&A, Help & Troubl] Androlover98:
Add these to your build.prop-

# By PurePerformances X
debug.sf.hw=1
ro.HOME_APP_ADJ=1
video.accelerate.hw=1
persist.sys.use_dithering=1
# System Tweaks
ro.HOME_APP_ADJ=1
ro.mot.eri.losalert.delay=1000
ro.config.hw_fast_dormancy=1
ro.ril.enable.amr.wideband=1
ro.config.hw_fast_dormancy=1
ro.config.hw_quickpoweron=true
# Miscellaneous Tweaks
persist.sys.NV_FPSLIMIT=90
debug.qctwa.statusbar=1
debug.qctwa.preservebuf=1
debug.qc.hardware=true
com.qc.hardware=true
ro.telephony.sms_segment_size=160
persist.telephony.support.ipv6=1
persist.telephony.support.ipv4=1
ro.config.hw_fast_dormancy=1
persist.sys.shutdown.mode=hibernate
ro.config.hw_power_saving=true
ro.media.enc.hprof.vid.fps=65
ro.mot.buttonlight.timeout=1
ro.ril.set.mtu1472=1
touch.presure.scale=0.001
# 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 Enhancement debug.performance.tuning=1
video.accelerate.hw=1
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
wifi.supplicant_scan_interval=180
# Dialing Tweaks
ro.telephony.call_ring.delay=0
ro.lge.proximity.delay=25
mot.proximity.delay=25
# DalvikVM
dalvik.vm.verify-bytecode=false
dalvik.vm.execution-mode=int:fast
dalvik.vm.checkjni=false
dalvik.vm.dexopt-data-only=1
dalvik.vm.heapstartsize=1m
dalvik.vm.heapgrowthlimit=64m
dalvik.vm.heapsize=128m
dalvik.vm.verify-bytecode=false
dalvik.vm.execution-mode=int:jit
dalvik.vm.lockprof.threshold=250
dalvik.vm.dexopt-flags=m=v,o=y
dalvik.vm.jmiopts=forcecopy
# Performance
debug.composition.type=gpu
ro.max.fling_velocity=20000
ro.min.fling_velocity=18000
debug.performance.tuning=1
debug.kill_allocating_task=0
debug.overlayui.enable=1
debug.egl.profiler=1
debug.egl.hw=1
debug.sf.hw=1
hw3d.force=1
hw2d.force=1
force_hw_ui=true
profiler.force_disable_err_rpt=1
profiler.force_disable_ulog=1
ro.min_pointer_dur=8
debug.kill_allocating_task=0
persist.sys.ui.hw=1
ro.debuggable=1
ro.config.disable.hw_accel=false
ro.kernel.android.checkjni=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
#Done by-
#Jeeko
#androlover98

Please hit thanks.

Very difficult to edit sh files on phone.:D