Nope, it runs all 8 cores when heavy use....so Note4 didnt face any lagging when running heavy apps. Use CPU-Z to monitor it. I cant capture the screenshot on all core actiaviated cause i m slow taking the screen shot. Will try capture it again.

Manage to snap it

That's why this phone heating up and drink a lot of juice when heavy use [all 8 cores actiavated]. Not like other 8 cores phones, this Note4 totaly wont lag although it is heating up. It is a very good phone. I like this phone very much. Only is the battery when heavy use.........    
I also owned K3Note and Redmi Note2 which is 8 cores powerful 64bit CPU...........Yup, it is powerful, so what......cant use for long when full load. 20min heavy use lagging already. I m not comparing, i just give an example. I can say Galaxy Note 4/5 [octa core phone] is 1 of the best 8 cores phone.

so far lollipop stable for note edge? I heard many complaints like camera can't focus, and so on..

U are right, thats why i use Note1 till Note4, but Note5 a bit dissapointed me

oh,

well my both note 4 upgrade to lollipop already,

will test it out and see the differences,..

first battery cycle after charges my zerolemon battery overnight for 12 hour

90% battery is with 3 hour+ SOT  and 85% battery is with 5hour+ SOT after take out the battery for 10 sec to reset..

now my zeroleon really kicking in action

the seller advise me not to use fast charging,.. 

Got OTP update just now. Didnt manage to screen capture. Around 60MB.

Here are the info.

Huhu really...

Are those security updates?

nope, even sammobile also didn't update

still didnt receive any too here 

Battery only bout RM140, Battery Kit rm200.

Time to get a replacement battery.....u can try ask the battery price at Samsung Service Centre, might be cheaper than Retail Samsung shop but no retail packing.

I think a few of my frens n4 including mine have battery issue.  Last 10% like non existence