D855, 3 gb ram, 32 gb storage. I usually get 7:20 of sot on the normal battery with all of this.
Cm13 03/06(day/month, for the american fellas to understand better), acc kernel 1.5(latest as of now), xposed.
Lspeed, kernel adiutor mod which link is provided in the thread for the acc kernel.
Xposed modules (only the explicitly battery/performance affecting ones): greenify, amplify, power nap.
Cm13 settings:
No animations(all animations' speed set to 0 in developer options)
(I think that's pretty much it for cm settings that affect performance)
Lspeed settings:
OOM killer enabled
Cache reclaiming set to minimum
Cache allocation set to default
Kernel tweaks disabled
Fsync enabled
Battery improvement enabled
Faster boot enabled
Wifi sleeper disabled (not supported so not even worth trying it)
Flag tuner enabled
Fast charge enabled
Assertive display enabled
Improve scrolling enabled
Liquid smooth ui disabled
Disable debugging enabled
Disable kernel panic disabled (I recommend you keeping this disabled so that you can test the best kernel settings/stability for you)
Better in call audio enabled (wastes more battery during calls so change it accordingly)
Improve image quality enabled
Misc tweaks enabled
Multicore power save enabled
Cpu optimizer enabled
Net buffers set to small (wastes a bit more battery when using internet but it's worth it and big is just too wasteful)
RIL tweaks enabled
Google dns enabled (disable if you don't like google logging your history for 24?h, enable for better internet potentially saving you battery)
Faster streaming enabled
Fast dormancy enabled
IO boost disabled (doesn't give you any actual boost tbh)
IO extended queue disabled
Sd tweak disabled
Partition remount enabled
+Don't change anything after this unless you want to do further testing/tweaking
Watch out for edits!