High Memory Usage (~29GB) and Possible Memory Leak with High-Resolution RAW Files

Hi Adobe Support Team,

I am reporting a critical issue regarding abnormally high memory usage in the cloud-based Lightroom, which appears to be a memory leak.

1. Summary of the Bug

After a standard editing session with high-resolution RAW files, Lightroom's memory consumption climbs to an extremely high level (over 26 GB in my case, as confirmed by Lightroom's own diagnostics). This memory is not released even when the application is idle or minimized. The only way to reclaim the memory is to restart the application completely.

2. System & Software Environment

Lightroom Version: 8.4 x64 [ 20250603-0500-10f89fb ]
Operating System: Windows 11 Pro (Build 2009)
CPU: AMD Ryzen 7 9700X 8-Core Processor
GPU: NVIDIA GeForce RTX 5070 Ti (Driver 32.0.15.7688, 15.5 GB VRAM)
Total System RAM: 64 GB
Camera Model: Sony α7CR (61MP)
File Type: Uncompressed RAW (.ARW)

3. Steps to Reproduce

1. Import a batch of RAW files from the Sony α7CR.
2. Perform edits on several photos, specifically using AI-powered features like "Select Subject" masks and the "Denoise" function.
3. Observe the memory usage in Task Manager or Activity Monitor. It will increase steadily.
4. After finishing the edits, return to the Grid view or leave the application idle.
5. The key issue: The memory usage remains at its peak level and does not decrease over time. My attached screenshot shows ~29GB usage, and Lightroom's internal diagnostics confirm over 26GB is in use.

4. Observed Behavior vs. Expected Behavior

Observed: As shown in the attached screenshot from my previous session, Lightroom's process holds onto a very large amount of RAM indefinitely while idle.
Expected: Lightroom should release memory resources that are no longer needed after memory-intensive tasks (like AI Denoise or exporting) are complete, reducing its idle memory footprint to a more reasonable level.

This behavior significantly impacts overall system performance and strongly suggests a memory leak. I have the full diagnostic data from the "System Info" dialog and can provide it if needed.

Thank you.

[moved from bugs to discussions according to the community rules - Mod.]