High temperature / CPU usage / battery drain on 2009.47

[jasonwch]

Please tell us some basic information before asking for help:
Model Name:
Firmware Version:
Rooted or not:
Frequency of Occurrence:
APP Name & APP Version (If your issue relates to the app):
In addition to information above, please also provide as much details as you can, e.g., using scenario, what troubleshooting you've already done, screenshot, etc.
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As many posted on the forum. I and everyone have similar issue. (This is already upgraded for whole night and a full charge)
CPU also peak at 2.84/2.96 as from Armoury Crate even didn't do anything
Temperature goes high
Battery drain quickly
"Android System" also taking all battery usage from Battery page
What I observed:
From running processes, "Google Play Service" always show up, which not the case in old firmware
What I've tried to fix:
Wipe data (all data not just cache) for Google Play service and Armoury Crate. After cleaned, seems the CPU back to 826Hz, but after I restart the device, it go back to 2.84/2.96 all the time
There may be something wrong on this?

[jasonwch]

pictures attached, same as others

[jasonwch]

Mods, everyone is waiting for you lol

[jasonwch]

when i start phone at Safe mode, it's back to normal. When I restart back to normal mode, i cannot turn back ON mobile data at first. I need to restart to get mobile data turn back ON.
After mobile data ON, it keeps normal for first 15-20mins. I think once that google play service get trigger it will peak the CPU again

[You_ch]

Same problem here

[jasonwch]

I've just turned off FOTAService. CPU not peaking after a while. See how it goes in next few hours