Not sure if anyone even use these anymore, but here are some that i believe that has been helpful.
Enhanced Build Entries##
Better Scrolling
windowsmgr.max_events_per_sec=150
ro.min_pointer_dur=8
ro.max.fling_velocity=12000
ro.min.fling_velocity=8000
persist.sys.scrollingcache=3
debug.sf.hw=1
Better Internet Speeds
net.tcp.buffersize.default=4096,87380,256960,4096, 16384,256960
net.tcp.buffersize.wifi=4096,87380,256960,4096,163 84,256960
net.tcp.buffersize.umts=4096,87380,256960,4096,163 84,256960
net.tcp.buffersize.gprs=4096,87380,256960,4096,163 84,256960
net.tcp.buffersize.edge=4096,87380,256960,4096,163 84,256960
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
Instant Ringing
ro.telephony.call_ring.delay=0
ring.delay=0
Improve Voice Call Clarity
ro.ril.enable.amr.wideband=1
ro.config.vc_call_steps=20
Profiler Errors disabled
profiler.force_disable_err_rpt=1
profiler.force_disable_ulog=1
Disable Kernel Error check
ro.kernel.checkjni=0
ro.kernel.android.checkjni=0
persist.android.strictmode=0
Keep bluetooth from disconnecting after reboot
ro.securestorage.support=false
Performance Tuner
debug.performance.tuning=1
Assists with Gcamera ports
persist.camera.HAL3.enabled=1