Results such as your example usually occur because of outdated or bugged GPU drivers. That being said, providing us with your LrC System Info will allow a more accurate diagnosis and possibly a solution.
You can obtain the System Info file from the LrC Help>System Info menu item. Use the Copy button at top right corner of the System Info dialog to capture the info, then paste into a reply post.
Apologies for the delay, had some other issue to deal with.
Below is cop[y as requested.
Lightroom Classic version: 15.2 [ 202602111402-ec4112e8 ] License: Creative Cloud Language setting: en Operating system: Windows 11 - Home Premium Edition Version: 11.0.26200 Application architecture: x64 System architecture: x64 Logical processor count: 8 Processor speed: 1.9GHz SqLite Version: 3.36.0 Adobe GSDK Version: 1.4.0.171
CPU Utilisation: 1.0% Power Source: Plugged In Built-in memory: 7599.3 MB Dedicated GPU memory used by Lightroom: 594.0MB / 496.3MB (119%) Real memory available to Lightroom: 7599.3 MB Real memory used by Lightroom: 459.8 MB (6.0%) Virtual memory used by Lightroom: 2592.6 MB GDI objects count: 845 USER objects count: 3198 Process handles count: 3555 Memory cache size: 0.0MB Internal Camera Raw version: 18.2 [ 2482 ] Maximum thread count used by Camera Raw: 5 Camera Raw SIMD optimization: SSE2,AVX,AVX2 Camera Raw virtual memory: 455MB / 3799MB (11%) Camera Raw real memory: 733MB / 7599MB (9%)
Cache1: NT- RAM:0.0MB, VRAM:0.0MB, Combined:0.0MB
Cache2: m:0.0MB, n:0.0MB
U-main: 71.0MB
System DPI setting: 144 DPI (high DPI mode) Desktop composition enabled: Yes Standard Preview Size: 1920 pixels Displays: 1) 1920x1080 Input types: Multitouch: No, Integrated touch: No, Integrated pen: No, External touch: No, External pen: No, Keyboard: No
Graphics Processor Info: DirectX: AMD Radeon(TM) Graphics (27.20.15018.3) Init State: GPU for Display supported by default with image processing and export supported in the custom mode User Preference: Auto Enable HDR in Library: OFF GPU for Preview Generation: Auto (S4_0)