I have uniform app usage but then again I use Firefox. But overall battery span sucks, I don't even game or use much and it barely last 1.5days, just like my old 3000mah phones. Some bs going on around the 6000mah figure.
What does your battery capacity show up on apps like accubattery? Mine shows that usable capacity is 3000mah out of 6000mah(detects total capacity). Not even 1 month old phone for me.