P: Cannot merge panorama after updating to 10.14.6

Sounds very similar / the same...

https://forums.adobe.com/thread/2643956

Thanks. Will send, but just to be completely clear, the issue for me is with any panorama set, including ones that I've processed in the past in Lightroom on this same computer. 

It is. 

Is that a MacBook 13”?

I wouldn’t mind trying a set that’s failing for you, see if I can reproduce it on any of my machines. If we can reproduce it on demand, there’s a much better chance of it being fixed quickly. Dropbox or www.wetransfer.com to uploads@lightroomqueen.com would work.

Thanks for your input on this issue so far folks. Any thoughts on a solve? To recap and add clarifications...

a) Panorama creation impossible, either hangs at the merge step or the preview step (can't determine a pattern but it seems related to image set). Affects both Panorama and HDR Panorama.
b) General operations definitely slower, frequent spinning wheels while browsing library, trying to enter develop module, etc (having never seen any in the past 12 months of heavy use - 20,000 images per year). 
c) Issue occurs to files from multiple devices (Sony Camera and DJI Drone), across multiple (all) image sets. Panoramas created in the past using Lightroom will now not recreate from the same source files. 
d) Lightroom 8.4 & Mac OS 10.14.6.
e) HDR merge does work (but anecdotally seems slower).
f) The same files will merge using PTGUI and Photoshop (but Photoshop won't create a dng pano output).
g) Have copied my sys info above.
h) I've already tried purging the camera raw cache and disabling the GPU acceleration and various other combinations of memory allocation, performance settings etc.

Just at the time Lightroom should have sped up with 8.4, for me at least it's become virtually unusable, possibly in relation to 10.14.6.  

I'm using a Canon 5Ds. Having problems with anything regarding dng-fileformat. Exporting cr2 is no problem, exporting dng freezes. Creating HDRs does not work, creating panoramas does not work. Working with cr2 is no problem at all.

Set up a completly fresh 10.14.6, installed only Lightroom - same problems. LR freezes as long as dng-file format is created/exported.

Free disk space: 200GB

As far as I can see LR uses only one core while processing dng


Lightroom Classic-Version: 8.4 [ 201908011719-03751b60 ]Lizenz: Creative Cloud
Spracheinstellung: de-DE
Betriebssystem: Mac OS 10
Version: 10.14.6 [18G87]
Anwendungsarchitektur: x64
Anzahl logischer Prozessoren: 12
Prozessorgeschwindigkeit: 3,2 GHz
Integrierter Speicher: 8.192,0 MB
Für Lightroom verfügbarer phys. Speicher: 8.192,0 MB
Von Lightroom verwendeter phys. Speicher: 1.083,5 MB (13,2%)
Von Lightroom verwendeter virtueller Speicher: 2.167,8 MB
Cache-Speichergröße: 35,1MB
Interne Camera Raw-Version: 11.4 [ 273 ]
Maximale Anzahl Threads, die Camera Raw verwendet: 5
Camera Raw SIMD-Optimierung: SSE2,AVX,AVX2
Virtueller Speicher in Camera Raw: 457MB / 4095MB (11%)
Physischer Speicher in Camera Raw: 458MB / 8192MB (5%)
Monitore/Anzeigegeräte: 1) 2560x1440

Informationen zum Grafikprozessor: 
Metal: Intel(R) UHD Graphics 630



Anwendungsordner: /Applications/Adobe Lightroom Classic
Bibliothekspfad: /Users/admin/Pictures/Lightroom/Lightroom Catalog.lrcat
Einstellungen-Ordner: /Users/admin/Library/Application Support/Adobe/Lightroom

Installierte Zusatzmodule: 


Config.lua-Flags: None

AudioDeviceIOBlockSize: 512
AudioDeviceName: Externe Kopfhörer
AudioDeviceNumberOfChannels: 2
AudioDeviceSampleRate: 48000
Build: Uninitialized
CoreImage: true
GL_ACCUM_ALPHA_BITS: 0
GL_ACCUM_BLUE_BITS: 0
GL_ACCUM_GREEN_BITS: 0
GL_ACCUM_RED_BITS: 0
GL_ALPHA_BITS: 8
GL_BLUE_BITS: 8
GL_DEPTH_BITS: 24
GL_GREEN_BITS: 8
GL_MAX_3D_TEXTURE_SIZE: 2048
GL_MAX_TEXTURE_SIZE: 16384
GL_MAX_TEXTURE_UNITS: 8
GL_MAX_VIEWPORT_DIMS: 16384,16384
GL_RED_BITS: 8
GL_RENDERER: Intel(R) UHD Graphics 630
GL_SHADING_LANGUAGE_VERSION: 1.20
GL_STENCIL_BITS: 8
GL_VENDOR: Intel Inc.
GL_VERSION: 2.1 INTEL-12.10.12
OGLEnabled: true
GL_EXTENSIONS: GL_ARB_color_buffer_float GL_ARB_depth_buffer_float GL_ARB_depth_clamp GL_ARB_depth_texture GL_ARB_draw_buffers GL_ARB_draw_elements_base_vertex GL_ARB_draw_instanced GL_ARB_fragment_program GL_ARB_fragment_program_shadow GL_ARB_fragment_shader GL_ARB_framebuffer_object GL_ARB_framebuffer_sRGB GL_ARB_half_float_pixel GL_ARB_half_float_vertex GL_ARB_instanced_arrays GL_ARB_multisample GL_ARB_multitexture GL_ARB_occlusion_query GL_ARB_pixel_buffer_object GL_ARB_point_parameters GL_ARB_point_sprite GL_ARB_provoking_vertex GL_ARB_seamless_cube_map GL_ARB_shader_objects GL_ARB_shader_texture_lod GL_ARB_shading_language_100 GL_ARB_shadow GL_ARB_sync GL_ARB_texture_border_clamp GL_ARB_texture_compression GL_ARB_texture_compression_rgtc GL_ARB_texture_cube_map GL_ARB_texture_env_add GL_ARB_texture_env_combine GL_ARB_texture_env_crossbar GL_ARB_texture_env_dot3 GL_ARB_texture_float GL_ARB_texture_mirrored_repeat GL_ARB_texture_non_power_of_two GL_ARB_texture_rectangle GL_ARB_texture_rg GL_ARB_transpose_matrix GL_ARB_vertex_array_bgra GL_ARB_vertex_blend GL_ARB_vertex_buffer_object GL_ARB_vertex_program GL_ARB_vertex_shader GL_ARB_window_pos GL_EXT_abgr GL_EXT_bgra GL_EXT_blend_color GL_EXT_blend_equation_separate GL_EXT_blend_func_separate GL_EXT_blend_minmax GL_EXT_blend_subtract GL_EXT_clip_volume_hint GL_EXT_debug_label GL_EXT_debug_marker GL_EXT_draw_buffers2 GL_EXT_draw_range_elements GL_EXT_fog_coord GL_EXT_framebuffer_blit GL_EXT_framebuffer_multisample GL_EXT_framebuffer_multisample_blit_scaled GL_EXT_framebuffer_object GL_EXT_framebuffer_sRGB GL_EXT_geometry_shader4 GL_EXT_gpu_program_parameters GL_EXT_gpu_shader4 GL_EXT_multi_draw_arrays GL_EXT_packed_depth_stencil GL_EXT_packed_float GL_EXT_provoking_vertex GL_EXT_rescale_normal GL_EXT_secondary_color GL_EXT_separate_specular_color GL_EXT_shadow_funcs GL_EXT_stencil_two_side GL_EXT_stencil_wrap GL_EXT_texture_array GL_EXT_texture_compression_dxt1 GL_EXT_texture_compression_s3tc GL_EXT_texture_env_add GL_EXT_texture_filter_anisotropic GL_EXT_texture_integer GL_EXT_texture_lod_bias GL_EXT_texture_rectangle GL_EXT_texture_shared_exponent GL_EXT_texture_sRGB GL_EXT_texture_sRGB_decode GL_EXT_timer_query GL_EXT_transform_feedback GL_EXT_vertex_array_bgra GL_APPLE_aux_depth_stencil GL_APPLE_client_storage GL_APPLE_element_array GL_APPLE_fence GL_APPLE_float_pixels GL_APPLE_flush_buffer_range GL_APPLE_flush_render GL_APPLE_object_purgeable GL_APPLE_packed_pixels GL_APPLE_pixel_buffer GL_APPLE_rgb_422 GL_APPLE_row_bytes GL_APPLE_specular_vector GL_APPLE_texture_range GL_APPLE_transform_hint GL_APPLE_vertex_array_object GL_APPLE_vertex_array_range GL_APPLE_vertex_point_size GL_APPLE_vertex_program_evaluators GL_APPLE_ycbcr_422 GL_ATI_separate_stencil GL_ATI_texture_env_combine3 GL_ATI_texture_float GL_ATI_texture_mirror_once GL_IBM_rasterpos_clip GL_NV_blend_square GL_NV_conditional_render GL_NV_depth_clamp GL_NV_fog_distance GL_NV_light_max_exponent GL_NV_texgen_reflection GL_NV_texture_barrier GL_SGIS_generate_mipmap GL_SGIS_texture_edge_clamp GL_SGIS_texture_lod 

Thanks Ray... I can fire them the shots no problem if they need. However for me it's "anything". I've tried with a number of different DJI (same drone) shots, variable shot counts, plus Sony Camera shots. Perhaps tried around 10 different pano's shot over the last couple of days and nothing will merge. 

Thanks for your comment Rikk. Running at ~ 90-110GB free (500GB native drive), depending on preview cache.  

For the record, my issue was specifically with any panos that were 21 frames -- same thing > DJI (Mavic 2) Pro drone. James, what might be helpful for the Lightroom team is to shoot them a Dropbox/Google Drive link to the DJI pano frames so that they can test it.