Hey, i've been using the project elixir latest update so far V3.4, no problems or so what, battery life is better than stock rom, and performance so far so great, unlimited photos on google, updates are regular and everything is stable.
link to the latest build here
I haven't noticed any abnormal consumption.
I don't have any apps working in the background, and I haven't installed Gapps.
But the phone is new, the battery is 5Ah, with normal use I get to the evening with 30-40%.
Perhaps it consumes a bit more than MurenaOS (formerly /e/OS, which I used for years on several Xiaomis, with great satisfaction for my privacy needs).
I don't care much about battery consumption, my goal is privacy, and there is some work to be done on this Lineage.
I hope some Murena expert will work on it, I don't have the skills to do so.
I accept indications on other "privacy-friendly roms" or settings for Lineage 19.1...