Unlocked S8, Oreo 8.0, September 1st security patch
As the title says. I used adb commands to remove all Bixby related apps and also followed a debloating adb list I found on xda, I also removed VR apps, Game Launcher, most of Google's 'bloatware' like Movies, Music etc. and that has helped a lot. I did that after I factory reseted it a month ago, because I was having an insane battery drain where I used to get max 3h SoT. I use my phone basically all day, either on wi-fi or mobile data, do not limit my usage in any way. When I'm out, I use the auto brightness, when I'm in I manually adjust the brightness. I always charge it from 15%-20% to 80%.
If you have any questions lemme know. :)