[Google Camera Mods] enderbsg:
LG v30 settings

I can confirm that version GCam_6.1.021_Advanced_V1.4.032219.1950.apk is by far the best one so far. Very snappy, almost no crashing (only one I have hit is crash when you take a photo using front cam with hdr off...back cam is very stable). I have been playing with settings for past two days and this is what seem to be working the best for me so far:

<?xml version='1.0' encoding='utf-8' standalone='yes' ?>
<map>
<string name="pref_e_hdrplus_key">1</string>
<string name="bl_back_key">0</string>
<string name="pref_camera_picturesize_2ndauxback_key">large</string>
<string name="pref_front_customdenoiseparam_key">0</string>
<string name="pref_front_noise_model_ao_key">750</string>
<string name="pref_autoexposure_key">0</string>
<string name="libs_key">0</string>
<string name="pref_hot_pixel_key">2</string>
<string name="pref_camera_picturesize_front_key">2560x1920</string>
<string name="pref_double_tap_key">Zoom</string>
<string name="key_promote_launch_wear">0</string>
<string name="pref_qjpg_key">100</string>
<string name="refocus_upgrade_version">1</string>
<string name="portrait_fixer">1</string>
<string name="raw_key">37</string>
<string name="pref_camera_grid_lines_mode">0</string>
<string name="pref_camera_pano_orientation">pano_horizontal</string>
<string name="pref_hexagon_key">1</string>
<string name="pref_imax_audio_enabled_key">0</string>
<string name="pref_ext_mic_key">0</string>
<string name="pref_back_denoise_chroma_1_key">500</string>
<boolean name="photobooth_tutorial_shown" value="true" />
<string name="pref_aperture">0</string>
<string name="pref_last_location_recording_state">0</string>
<string name="pref_has_checked_photobooth_mode">1</string>
<string name="vfp_motion_key">0</string>
<string name="highlight_b_key">10</string>
<string name="pref_video_quality_front_key">large</string>
<string name="pref_camera_picturesize_back_key">4656x3492</string>
<string name="pref_allow_unknown_devices_key">0</string>
<string name="pref_camera_back_flashmode_key">off</string>
<string name="pref_disable_zoom_key">1</string>
<string name="pref_mode_vesper_level">0</string>
<string name="pref_camera_hdr_key">0</string>
<string name="pref_has_seen_swiped_to_video">1</string>
<string name="pref_cuttlefish_front_torch_mode_key">off</string>
<string name="pref_hdrdenoisefront_key">300</string>
<string name="pref_camera_enable_iris">0</string>
<string name="pref_has_checked_ornament_mode">0</string>
<string name="pref_micro_mode">0</string>
<string name="pref_back_denoise_revert_1_key">5</string>
<string name="pref_shading_mode_key">2</string>
<string name="pref_iso_exynos_key">0</string>
<string name="pref_camera_hdrplus_option_available_key">1</string>
<string name="pref_back_denoise_luma_2_key">100</string>
<string name="pref_back_denoise_luma_0_key">220</string>
<string name="pref_back_denoise_revert_0_key">5</string>
<string name="buffer_key">0</string>
<string name="frames_min_key">7</string>
<string name="pref_sabre_key">2</string>
<string name="pref_badtf_fix_key">0</string>
<string name="pref_meteringmode_key">0</string>
<string name="pref_opticalstabi_key">1</string>
<string name="pref_volume_key_action">Shutter</string>
<string name="pref_auxbackcameraid_key">0</string>
<string name="pref_front_denoise_luma_0_key">220</string>
<string name="slowmo_key">1</string>
<string name="pref_has_seen_permissions_dialogs">1</string>
<string name="pref_front_noise_model_as_key">1694300</string>
<string name="pref_front_denoise_revert_1_key">5</string>
<string name="pref_exposure_key">0</string>
<int name="tooltip_impression_count_for_micro_tutorial_dismiss" value="3" />
<string name="pref_video_quality_back_key">large</string>
<string name="iso_up_key">0</string>
<string name="motion_key">0</string>
<long name="tooltip_latest_impression_timestamp_for_cuttlefish_steady_advice" value="1552452755289" />
<string name="pref_color_transform_key">1</string>
<string name="google_photos_key">0</string>
<string name="pref_camera_video_back_flashmode_key">off</string>
<string name="highlight_f_key">10</string>
<string name="pref_force_raw10_front_key">0</string>
<string name="exp_ns_key">1000</string>
<string name="pref_back_noise_model_as_key">1694300</string>
<string name="pref_enable_lowlight_key">0</string>
<string name="pref_camera_hdr_plus_key">off</string>
<string name="config_key">0</string>
<string name="vfp_ae_key">0</string>
<string name="pref_video_stabilization_key">1</string>
<string name="pref_front_noise_model_bo_key">22500</string>
<string name="pref_bitrate_key">0</string>
<string name="pref_back_tuningmode_key">0</string>
<string name="pixel_awb_key">0</string>
<string name="pref_back_customdenoiseparam_key">0</string>
<string name="pref_camera_video_front_flashmode_key">off</string>
<string name="pref_front_denoise_chroma_2_key">500</string>
<string name="pref_af_mode_front">0</string>
<string name="pref_hdrdenoiseback_key">100</string>
<int name="tooltip_impression_count_for_cuttlefish_steady_advice" value="1" />
<string name="pref_back_noise_model_ao_key">750</string>
<string name="pref_hdrplus_multi_autoexposure_key">100</string>
<string name="pref_enabled_hdrdenoise_key">0</string>
<string name="pref_ns_image_rotation_key">0</string>
<string name="pref_back_denoise_chroma_0_key">500</string>
<string name="pref_micro_res_key">1</string>
<string name="pref_enable_fps_front_key">0</string>
<string name="pref_back_noise_model_bo_key">22500</string>
<string name="fix_old_wb_key">0</string>
<string name="pref_upgrade_version">16</string>
<long name="tooltip_latest_impression_timestamp_for_micro_tutorial_dismiss" value="1553809487811" />
<string name="panorama_upgrade_version">1</string>
<string name="pref_front_customnoisemodel_key">0</string>
<string name="pref_front_denoise_chroma_0_key">500</string>
<string name="pref_enable_dbl_key">0</string>
<string name="resampling_key">0</string>
<string name="pref_camera_photosphere_orientation">pano_photosphere</string>
<string name="model_f_key">6</string>
<string name="pref_video_fps_p2018_key">FPS_30</string>
<string name="pref_fix_iso_key">0</string>
<string name="pref_micro_res2_key">1</string>
<string name="cs_video_key">1</string>
<string name="pref_camera_raw_output_key">0</string>
<string name="img_key">35</string>
<string name="pref_back_denoise_chroma_2_key">500</string>
<string name="pref_video_hevc_setting_key">0</string>
<string name="pref_max_brightness_key">0</string>
<string name="pref_back_denoise_revert_2_key">5</string>
<string name="pref_has_checked_photosphere_mode">1</string>
<string name="pref_camera_sounds_key">1</string>
<string name="pref_front_denoise_luma_2_key">100</string>
<string name="pref_back_customnoisemodel_key">0</string>
<string name="pref_focus_tracking_key">0</string>
<string name="shadow_b_key">16</string>
<string name="pref_camera_recordlocation_key">0</string>
<string name="pref_front_noise_model_bs_key">1694300</string>
<string name="pref_refocus_resolution_key">0</string>
<string name="pref_disable_slowmotion_key">0</string>
<string name="pref_camera_raw_output_option_available_key">0</string>
<string name="pref_front_denoise_revert_2_key">5</string>
<string name="pref_has_checked_cuttlefish_mode">1</string>
<string name="pref_raw_compression_key">0</string>
<string name="pref_back_noise_model_bs_key">90900</string>
<string name="pref_camera_front_flashmode_key">auto</string>
<string name="fix_ns_key">1</string>
<string name="pref_livehdr_key">0</string>
<string name="pref_back_denoise_luma_1_key">150</string>
<string name="aux_key">1</string>
<string name="exp_key">0</string>
<string name="pref_front_denoise_luma_1_key">150</string>
<string name="pref_front_tuningmode_key">0</string>
<string name="pref_force_autoexposure_key">0</string>
<string name="pref_max_memory_key">1680</string>
<string name="pref_flash_supported_back_camera">1</string>
<string name="pref_camera_picturesize_auxback_key">4160x3120</string>
<string name="pref_hdr_support_mode_back_camera">hdr_plus</string>
<string name="flash_ns_key">0</string>
<string name="pref_dirty_lens_detector_key">0</string>
<string name="pref_has_checked_lens_mode">0</string>
<string name="cs_photo_key">1</string>
<string name="pref_distortion_correction_key">2</string>
<string name="pref_camera_countdown_duration_key">0</string>
<string name="pref_front_denoise_chroma_1_key">500</string>
<string name="shadow_f_key">16</string>
<string name="bl_front_key">0</string>
<string name="model_b_key">6</string>
<string name="pref_has_checked_gouda_mode">1</string>
<string name="pref_camera_advice_settings">1</string>
<string name="pref_front_denoise_revert_0_key">5</string>
<string name="pref_af_mode_back">0</string>
</map>

What I have found:

1. Pixel 3 AWB introduces weird orange hue in photos...all photos look like taken at sunset.

2. I am not sure about Night sight performance...seems too slow and results are blurry. Maybe different setting?

3. HDR+ can be used comfortably with 9 samples, although I prefer 7 as that is faster and the results are comparable.

4. Motion photos work but not flawlessly

5. I did not play with other libraries yet so that might be area to improve these settings

6. Selfie cam works but with hdr+ it is very blurred and there is still green hue in low light (even with the fix turned on)

Be my guest and try these settings and if you find something better please share! This version seems really promising so maybe over time we will get to the same stability as in the cstark's 4.* version.