I was unhappy with OpenCamera and the Stock camera app that comes with lineagos. It takes forever to focus the first picture if you open the camera app. I tried many settings, also the camera2api but nothing really fullfilled my expectations.
On twitter I found out about GrapheneOS and that the guys are working on a camera app for Pixel Phones:
I installed it and its really snappy. Let’s see how it turns out in the long run.
Btw: I am not quite sure what to think about GrapheneOS: It seems like the most secure Android available atm but the development is heavily dependent on one single developer who seems to be not free of conflicts. So I am staying with LineageOS.