Tried your settings, did notice a better image quality just what Model are you using in the settings.
These are my GCam cofig
SUPPORT LEVEL OVERRIDE: MEXUS_2015
SUPPORTED HW LEVEL BACK CAMERA: LIMITED
CONFIG CAMERA: PIXEL 2017 HARDWARE ZSL DR DOGFOOD
BUFFERS SIZE: 45
TOTAL IMAGEREADER IMAGE COUNT: 52
HDR+ BURST FRAME COUNT: 12
CALCULATION HDR+ IMAGEREADER IMAGE COUNT: ALL EXP CONFIG
These might be overkill ir wrong but they do the job.