The good old days of needing to run a custom rom to get custom features on your Android device have all but passed us by. These days all you really need to get custom features on your phone is root and the Xposed Framework. Pretty much every feature found in roms from yester year can be found in the form of an Xposed module.
The LG G4 has been without Xposed framework since the release of the Marshmallow Android 6.0 update. Installing Xposed over a fresh install of Marshmallow results in an endless bootloop. Developer @rovo89 has just uploaded a flashable.zip that will get Xposed Framework up and running on your LG G4 that is running Marshmallow. Just grab the file and flash it in custom recovery! Grab the file from the link below.
via XDA