When using klwp as the default wall paper (with several different launchers), alarms and timers do not go off on time. (They work fine when I disable klwp.) They are anywhere from 5 to 15 minutes late. For example my morning alarm is set for 625 but it doesn't go off until about 633 most days. Setting a timer for 2 minutes goes 5 to 10 minutes past the end before sounding. I looked at klwp formulas and the system time and alarms all return correct times but there is some lag or disconnect for when they actually go off. My wife has the same phone and started having the same problems as soon as she set up klwp.
BLU Vivo 8, Android 7.0