LRC very slow in opening images

Hello dj_paige,

Thank you for the response.  I tried your fix, and the system is back to normal.  When I zoom to 100%, the action is completed almost instantaneously.  What is strange is that the problem occurred well before I cleared my cache; it started after I had the catalog issue mentioned in my original post.  I only cleared the cache in an attempt to remedy the issue.  I appreciate your assistance.

Paul Lebras

Here is the system info that you need - thanks:

Lightroom Classic version: 15.1 [ 202512101606-1bb801a8 ]
License: Creative Cloud
Language setting: en
Operating system: Windows 10 - Home Premium Edition
Version: 10.0.19045
Application architecture: x64
System architecture: x64
Logical processor count: 4
Processor speed: 3.1GHz
SqLite Version: 3.36.0
Adobe GSDK Version: 1.4.0.171

CPU Utilisation: 25.0%
Power Source: Plugged In
Built-in memory: 12227.0 MB
Dedicated GPU memory used by Lightroom: 585.5MB / 3962.0MB (14%)
Real memory available to Lightroom: 12227.0 MB
Real memory used by Lightroom: 1836.8 MB (15.0%)
Virtual memory used by Lightroom: 2582.6 MB
GDI objects count: 816
USER objects count: 3188
Process handles count: 2227
Memory cache size: 812.4MB
Internal Camera Raw version: 18.1 [ 2420 ]
Maximum thread count used by Camera Raw: 3
Camera Raw SIMD optimization: SSE2,AVX,AVX2
Camera Raw virtual memory: 730MB / 6113MB (11%)
Camera Raw real memory: 731MB / 12227MB (5%)

Cache1:
NT- RAM:0.0MB, VRAM:0.0MB, Combined:0.0MB

Cache2:
m:812.4MB, n:0.0MB

U-main: 112.0MB

System DPI setting: 96 DPI
Desktop composition enabled: Yes
Standard Preview Size: 2048 pixels
Displays: 1) 1920x1080
Input types: Multitouch: No, Integrated touch: No, Integrated pen: Yes, External touch: No, External pen: Yes, Keyboard: No

Graphics Processor Info:
DirectX: NVIDIA GeForce GTX 1650 (27.21.14.5751)
Init State: GPU for Image Processing supported by default
User Preference: GPU for Export enabled
Enable HDR in Library: ON
GPU for Preview Generation: Auto (S3_3)

Application folder: C:\Program Files\Adobe\Adobe Lightroom Classic
Library Path: F:\LR Catalog (10 Jun 2024)\LR Catalog (10 Jun 2024).lrcat
Settings Folder: C:\Users\PaulandKris\AppData\Roaming\Adobe\Lightroom

Installed Plugins:
1) AdobeStock
2) Epson Print Layout
3) Flickr
4) HDR Efex Pro 2
5) ON1 Resize AI 2022
6) Show Focus Points
7) Topaz Photo AI

Config.lua flags:

Adapter #1: Vendor : 10de
Device : 1f82
Subsystem : 8d921462
Revision : a1
Video Memory : 3962
Adapter #2: Vendor : 1414
Device : 8c
Subsystem : 0
Revision : 0
Video Memory : 0
AudioDeviceIOBlockSize: 1024
AudioDeviceName: System Default - Speakers (High Definition Audio Device)
AudioDeviceNumberOfChannels: 2
AudioDeviceSampleRate: 48000
Build: LR5x26
Direct2DEnabled: false
GL_ACCUM_ALPHA_BITS: 16
GL_ACCUM_BLUE_BITS: 16
GL_ACCUM_GREEN_BITS: 16
GL_ACCUM_RED_BITS: 16
GL_ALPHA_BITS: 0
GL_BLUE_BITS: 8
GL_DEPTH_BITS: 24
GL_GREEN_BITS: 8
GL_MAX_3D_TEXTURE_SIZE: 16384
GL_MAX_TEXTURE_SIZE: 32768
GL_MAX_TEXTURE_UNITS: 4
GL_MAX_VIEWPORT_DIMS: 32768,32768
GL_RED_BITS: 8
GL_RENDERER: GeForce GTX 1650/PCIe/SSE2
GL_SHADING_LANGUAGE_VERSION: 4.60 NVIDIA
GL_STENCIL_BITS: 8
GL_VENDOR: NVIDIA Corporation
GL_VERSION: 4.6.0 NVIDIA 457.51
GPUDeviceEnabled: false
OGLEnabled: true
GL_EXTENSIONS: GL_AMD_multi_draw_indirect GL_AMD_seamless_cubemap_per_texture GL_AMD_vertex_shader_viewport_index GL_AMD_vertex_shader_layer GL_ARB_arrays_of_arrays GL_ARB_base_instance GL_ARB_bindless_texture GL_ARB_blend_func_extended GL_ARB_buffer_storage GL_ARB_clear_buffer_object GL_ARB_clear_texture GL_ARB_clip_control GL_ARB_color_buffer_float GL_ARB_compatibility GL_ARB_compressed_texture_pixel_storage GL_ARB_conservative_depth GL_ARB_compute_shader GL_ARB_compute_variable_group_size GL_ARB_conditional_render_inverted GL_ARB_copy_buffer GL_ARB_copy_image GL_ARB_cull_distance GL_ARB_debug_output GL_ARB_depth_buffer_float GL_ARB_depth_clamp GL_ARB_depth_texture GL_ARB_derivative_control GL_ARB_direct_state_access GL_ARB_draw_buffers GL_ARB_draw_buffers_blend GL_ARB_draw_indirect GL_ARB_draw_elements_base_vertex GL_ARB_draw_instanced GL_ARB_enhanced_layouts GL_ARB_ES2_compatibility GL_ARB_ES3_compatibility GL_ARB_ES3_1_compatibility GL_ARB_ES3_2_compatibility GL_ARB_explicit_attrib_location GL_ARB_explicit_uniform_location GL_ARB_fragment_coord_conventions GL_ARB_fragment_layer_viewport GL_ARB_fragment_program GL_ARB_fragment_program_shadow GL_ARB_fragment_shader GL_ARB_fragment_shader_interlock GL_ARB_framebuffer_no_attachments GL_ARB_framebuffer_object GL_ARB_framebuffer_sRGB GL_ARB_geometry_shader4 GL_ARB_get_program_binary GL_ARB_get_texture_sub_image GL_ARB_gl_spirv GL_ARB_gpu_shader5 GL_ARB_gpu_shader_fp64 GL_ARB_gpu_shader_int64 GL_ARB_half_float_pixel GL_ARB_half_float_vertex GL_ARB_imaging GL_ARB_indirect_parameters GL_ARB_instanced_arrays GL_ARB_internalformat_query GL_ARB_internalformat_query2 GL_ARB_invalidate_subdata GL_ARB_map_buffer_alignment GL_ARB_map_buffer_range GL_ARB_multi_bind GL_ARB_multi_draw_indirect GL_ARB_multisample GL_ARB_multitexture GL_ARB_occlusion_query GL_ARB_occlusion_query2 GL_ARB_parallel_shader_compile GL_ARB_pipeline_statistics_query GL_ARB_pixel_buffer_object GL_ARB_point_parameters 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