After having a bit of fun to see if I could go 2 days without charging my 6S, I ran it in low power mode from 100% until 1% when I plugged it in (yeah... it didn't make it through 2 days...). The whole time I never noticed any stuttering in apps or lagging in games. The phone overall seemed just as smooth with low power mode on. I mean the fact I extended my usage 3 hours and standby by 19 hours without losing any performance is pretty cool. I might as well just run my phone 24/7 in low power mode. Just wanna know if you guys notice this or if low power mode is the complete opposite for you. I don't give two toes about geekbench scores or any of that crap, I'm talking about real world performance. Running iOS 9.1 btw.