[Android Q&A, Help & Troubleshooting] Be4st187:
I know that a lot of folk use apps like Greenify, Power Nap, Amplify, Force Doze, etc along with things like Pixel Filter, Smart Pixel feature in some roms etc, but are all these really necessary with current phones?

I have used all of the above together for years but curious about if I really need to now and if they are just impacting my battery more than they save? Do I really need them all now? I'm not using ForceDoze currently as Havoc OS has it's own doze settings and aggressive profile, but I'm wondering if Power Nap is even needed if I have Greenify and Amplify.

Just trying to reduce the apps I need without compromising my standby drain as I am running into odd issues like Magisk failing to grant root after a few minutes or so uptime unless I restart the phone and quickly open the app I need to grant root (once in the allowed list, they work flawlessly. It's just the initial prompt), messages like Whatsapp/Facebook not coming through even though they are exempt from battery optimisations and whitelisted in all the above apps and fingerprint/double tap to wake not working after 10 minutes unless I hit the power button first. I feel there are conflicts going on here which I have only had since having my OnePlus 6 this month. Not an issue with my S5 with this exact setup which was running for years and all my issues are non-existent if I leave the phone stock.

I am obviously going wrong somewhere and need to figure out where.

Also, if I run pixel filter or the smart pixel feature built into Havoc OS, am I better doing that or just turning it off and lowering the brightness? Smart pixel dims the screen slightly which I have to counter by raising the brightness. That's the one thing that has me confused as to which is actually using more juice.

Just in case I am doing something wrong, I have written down what I do in order after installing a new ROM in the attempt of maximising battery life. Doesn't seem tied to Havoc OS, but to my OnePlus 6 as I never had these issue with my previous S5.

Below is after the usual TWRP, Magisk, ROM and setting up settings etc

-Install Greenify (donation package), Amplify, Power Nap, EdXposed, Riru Core, Riru Yahfa, NFS, Better Battery Stats.

-After enabling all of them in EdXposed and restarting, I fire up Greenify and turn on all Xposed features and donation features but leave smart hibernation, ignore background free and aggressive doze off.

-Greenify all games, apps I use rarely and system apps like Camera, Print Spooler and Bookmark Provider

-Open Power Nap, select Endurance mode and whitelist Magisk, EdXposed, Greenify, Tasker, Messages, Phone, WhatsApp, BBS and LastPass (Power Nap seemed to disable it's autofill service)

-Start up Amplify so it does it's checks and exit

-Set up BBS

-Remove all these apps from OS battery optimisation

-Reboot to recovery and copy over the Amplify settings file to it's folder within data/data/Amplify folder/shared prefs and restart to system. (basic Google and app specific wakelocks you will find in all Amplify guides on XDA and nothing else)

-Add Play Store, Services, Framework, Google Pay and my banking app to Magisk Hide list and EdXposed blacklist to pass SafetyNet.

And this is where my problems start happening. This is what I have done for years and I never had issues. I suppose I could do these one at a time until I hit that wall where things go wrong, but thought I would ask here in case any of you can spot the mistake. Thanks in advance for the help or roasting lol

*Edit*

If anyone has any other ideas to reduce battery drain, you can tell me. I'm trying to maximise both screen on and screen off time without compromising too much.