[Xiaomi Mi A2 Lite Themes, Apps, and Mods] perfect_:
Didnt tested yet on Mi A2 Lite. Use at your own risk.

Security

ro.build.selinux=1

ro.adb.secure=1

Cpu

dalvik.vm.isa.arm.variant=cortex-a53

dalvik.vm.isa.arm.features=default

dalvik.vm.boot-dex2oat-threads=8

dalvik.vm.dex2oat-threads=8

ro.sys.fw.dex2oat_thread_count=8

dalvik.vm.image-dex2oat-threads=8

persist.sys.dalvik.multithread=true

persist.sys.dalvik.hyperthreading=true

dalvik.vm.image-dex2oat-filter=speed

dalvik.vm.dex2oat-filter=speed

Camera

persist.camera.eis.enable=1

persist.vendor.camera.eis.enable=1

camera.eis.enable=1

vendor.camera.lowpower.record.enable=1

persist.camera.antibanding=60

persist.camera.HAL3.enabled=1

persist.vendor.camera.HAL3.enabled=1

persist.camera.max.previewfps=60

persist.vendor.camera.max.previewfps=60

persist.denoise.process.plates=2

persist.vendor.denoise.process.plates=2

ro.camcorder.videoModes=true

persist.camera.time.monotonic=1

persist.camera.isp.clock.optmz=0

Connections

net.dns1=176.103.130.132

net.dns2=176.103.130.134

net.ipv4.tcp_no_metrics_save=1

net.ipv4.tcp_moderate_rcvbuf=1

net.ipv6.conf.all.disable_ipv6=1

net.ipv6.conf.default.disable_ipv6=1

persist.telephony.support.ipv6=0

ro.use_data_netmgrd=true

persist.data.netmgrd.qos.enable=true

ro.fm.transmitter=false

ro.product.wifi=802.11 n

ro.product.bluetooth=4.2

ro.usb_host=1

persist.radio.multisim.config=dsds

persist.radio.custom_ecc=1

persist.radio.RATE_ADAPT_ENABLE=1

ro.support.signalsmooth=true

persist.radio.is_wps_enabled=false

Battery saver

wifi.supplicant_scan_interval=240

ro.config.hw_power_saving=1

persist.radio.add_power_save=1

pm.sleep_mode=1

settings.display.autobacklight=1

dev.pm.dyn_samplingrate=1

ro.ril.sensor.sleep.control=1

qcom.bt.le_dev_pwr_class=1

For speed

persist.service.lgospd.enable=0

persist.service.pcsync.enable=0

profiler.force_disable_ulog=true

profiler.force_disable_ulog=1

profiler.force_disable_err_rpt=1

profiler.force_disable_err_rpt=true

profiler.hung.dumpdobugreport=false

debugtool.anrhistory=0

debug.mdpcomp.logs=0

profiler.debugmonitor=false

profiler.launch=false

logcat.live=disable

persist.camera.debug.logfile=0

Lcd Brightness

ro.lcd_min_brightness=30

ro.lcd_max_brightness=210

persist.vendor.max.brightness=210

UI

ro.fps_enable=1

gpu.fps=auto

cpu.fps=auto

ro.fps.capsmax=60fps

ro.fps.capsmin=30fps

boot.fps=30

ro.product.multi_touch_enabled=true

ro.product.max_num_touch=4

hw2d.force=1

hw3d.force=1

debug.hwui.render_dirty_regions=false

hwui.render_dirty_regions=false

hwui.disable_vsync=true

ro.hwui.disable_scissor_opt=true

persist.splitwindow.support_all=true

ro.config.disable.hw_accel=false

debug.sf.hw=1

transition_animation_scale=0.6

persist.sys.NV_FPSLIMIT=60

persist.sys.scrollingcache=4

ro.hardware.egl=adreno

sys.use_fifo_ui=1

view.scroll_friction=10

debug.performance.tuning=1

Video

sys.display-size=2280x1080

encoder.video.profile=high

vendor.vidc.dec.enable.downscalar=1

vidc.dec.downscalar_width=2280

vidc.dec.downscalar_height=1080

vidc.enc.disable_bframes=1

ro.media.enc.hprof.vid.fps=65

media.stagefright.enable-aac=true

media.stagefright.enable-qcp=true

media.stagefright.enable-player=true

media.stagefright.enable-meta=true

media.stagefright.enable-scan=true

media.stagefright.enable-http=true

media.stagefright.enable-rtsp=true

media.stagefright.enable-record=false

media.stagefright.use-awesome=false

ro.media.dec.vid.wmv.enabled=1

ro.media.enc.vid.wmv.enabled=1

ro.media.dec.vid.H.264.enabled=1

ro.media.enc.vid.H.264.enabled=1

ro.media.dec.vid.mp4.enabled=1

ro.media.enc.vid.mp4.enabled=1

ro.media.enc.jpeg.quality=100

persist.mm.enable.prefetch=true

mm.enable.smoothstreaming=true

mm.enable.sec.smoothstreaming=true

persist.mm.sta.enable=1

mm.mpeg4dp.hw.support=true

video.accelerate.hw=1

Nfc

persist.factory.nfc=false

ro.nfc.on.default=false

Bluetooth

persist.bt.enableAptXHD=true

persist.service.btui.use_aptx=1

persistent.bt.a2dp_offload_cap=sbc-aptx-aptXHD

persistent.vendor.bt.a2dp_offload_cap=sbc-aac-aptx-aptXHD

ro.bluetooth.hfp.ver=1.7

persist.bt.a2dp.aptx_hd_disable=false

Audio

vendor.audio.media.stereo.control=0

af.resampler.quality=255

persist.audio.dualmic.config=endfire

persist.audio.fluence.mode=endfire

persist.audio.fluence.voicecall=true

persist.vendor.audio.fluence.voicecomm=true

persist.audio.fluence.voicerec=false

persist.audio.fluence.speaker=true

audio.deep_buffer.media=true

vendor.voice.conc.fallbackpath=deep-buffer

ro.media.dec.aud.mp3.enabled=1

ro.media.enc.aud.mp3.enabled=1

ro.media.dec.aud.flac.enabled=1

ro.media.enc.aud.flac.enabled=1

ro.media.dec.aud.wma.enabled=1

ro.media.enc.aud.wma.enabled=1

media.aac_51_output_enabled=true

flac.sw.decoder.24bit.support=true

persist.audio.speaker.dualmode=true

vendor.audio.playback.mch.downsample=true

vendor.audio.use.sw.alac.decoder=true

vendor.audio.use.sw.ape.decoder=true

af.fast_track_multiplier=1

Ram

sys.keep_app_1=com.teslacoilsw.launcher

sys.keep_app_2=appbuck3t.youtubeadskipper

sys.keep_app_3=com.android.inputmethod.latin

sys.keep_app_4=com.android.systemui

ro.config.max_starting_bg=4

ro.sys.fw.bservice_enable=true

ro.sys.fw.bservice_limit=4

ro.sys.fw.bservice_age=5000

ro.HOME_APP_ADJ=1

ro.sys.fw.use_trim_settings=true

ro.trim.config=true

Disable multiple user

fw.max_users=1

fw.show_multiuserui=0

fw.show_hidden_users=0

fw.power_user_switcher=0