This is a perfectly stable Xperia rom for the gionee P3 and no lag is present. Install this rom zip file
Features:
Xperia UI
Sony Walkman
Transparent status bar and notification
Customizable launcher
This rom works perfectly with Nova Launcher.
Install Nova Launcher from here
Installation:-
place the .zip of ROM file, standbyfix and gapps in sdcard
2. Wipe data/factory reset and advance -> Wipe dalvik cache
3. Install zip -> install xperia.zip, gapps, and standbyfix
4. Reboot System now
first boot will take sometime…!
Download Links:
GAPPS (Optional but necessary if you want all google apps)
CELL STANDBY FIX (it will prevent quick discharge of battery and extending battery life)