My opinion after 1years uses this rom
Version 1.6 more stable than 2.0
Why ?
I dont know but i think version 1.6 most stable than 2.0
1.6 and 2.0 have same problem on battery on 100% charger and pluged has change to 98.
If you wanna have 100% battery wait 5-10 minutes after the battery fully. Look at the battery ,the battery no more change if you pluged ,the battery still 100%
Its my opinion about battery .
About heavy games , truthly im installed pubg mobile on this rom
Kernel 2.0 have lagged frame for a playing games
But no on kernel 1.6 , pubg games are stable no lag ,no frame lagged, lucky samsung have game tuner for games

Ihave 5-6 completed round games pubg from 100% batteries to 20% .
For games i choosing 1.6 than 2.0
Leviathan kernel i use leviathan kernel just 3 weeks,no battery problem indicator bar ,but less drained from 100%to 90.
From 100% battery to 90% uses normal like internet whatsapp and many more are hot on machine.
But normal @90 % until low capacity bateries.
Slowly charger at 15 to 50 but fast 50 to 100%.
For games laged sometime on pubg heavy games
Normal game from 100% battery to 20% i completed 6-8 round games until battery low.
Honestly oddy have no update , or improved by dev.
Im joining to xda now because i use thia rom 1 years ,maybe i have to share

.forgive me if i have some missing opinion or my langguage is bad ,im from indonesia

:laugh:
---------- Post added at 08:07 PM ---------- Previous post was at 08:04 PM ----------
Miss question, yes just go to twrp and install the zip.

Do you have problem sir ?

