The camera app is laggy? The only laggy part I found was switching to the front camera. My personal complaints about the Google Camera App are as follows:
- The AF indicator is absolute bullshit. How do I know its achieved focus or failed to find focus. The old AOSP camera of showing green or red made more sense. This is critical with closeup shots where I'm unsure if the camera has achieved AF or if its struggling. Sometimes its hard to tell based on the sharpness whether its there or almost there.
- The shutter sound needs a real click.
- The lack of adjustment for Exposure Compensation is disappointing. Since iOS8, the drag feature is extremely useful. Instead I just keep tapping around the screen trying to figure out when the metering will meter to something I like.
- Burst mode is god awful. Look at how iOS does it. The shutter sound click makes it distinct so you know its shooting 10 fps like a machine gun. Also the ability to review burst mode pictures by dragging across a bar like a video to go frame by frame is very nice. In Google Photos you just scroll picture to picture--useless.
You mentioning burst mode must mean you're talking about the 6P and not the 5X. Just today after using Snapchat(which is laggy as hell too), the camera disconnected from the camera app just giving me a black screen forcing me to reboot the phone.
Sunday night while trail running with my dogs, I had runkeeper running and I stopped on a few occasions to take pics. Several times, the camera wouldn't even allow me to take a pic or would take a pic only not to process and create a pic. Then finally disconnecting from the camera app, not allowing me to take a pic til we got back to the car and I rebooted the phone.
Never had any of these issue with my Nexus 5.
edit - just got home and new running shoes were delivered by Amazon. Took a pic of the shoes with no other apps open, the camera supposedly takes a pic and shows it in the sneak preview circle, I click on the sneak preview circle to see the pic, no pic. Yes, the camera app sucks big time.