Camera Raw 18.3 - VRAM memory leak on RTX 5060 Ti (Blackwell GPU) causes 100% GPU load and extremely slow file saving

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System configuration:

• CPU: Intel Core Ultra 7 265KF
• RAM: 64 GB
• GPU: NVIDIA GeForce RTX 5060 Ti 16GB GDDR7 (Gigabyte), GPU-Z confirms 16,384 MB VRAM
• GPU Driver: NVIDIA Studio Driver 596.36 (WHQL)
• Motherboard: Gigabyte Z890 AORUS ELITE X ICE
• OS: Windows 11 Pro 25H2 (Build 26200)
• Photoshop: 27.6
• Camera Raw: 18.3
• Monitors: BenQ 2560x1440 (primary) + secondary 1920x1080

Bug description:

After opening RAW files (Canon EOS R6 Mark II, CR3 format) in Camera Raw and applying adjustments such as presets, masks, filters and AI-based operations (Denoise AI, Remove Object), the system progressively slows down until it becomes almost completely unresponsive. Saving a single photo can take over 60 seconds.

Key finding confirmed via GPU-Z Sensors:

After applying filters and masks in Camera Raw, VRAM usage reaches 15,937 MB out of 16,384 MB total (97% of available VRAM). GPU Load stays locked at 100% and Bus Interface Load stays at 100% indefinitely, blocking file saving. The GPU fans spin up and the entire system becomes sluggish, including unrelated applications.

This is a progressive memory leak: after a fresh Photoshop restart, the first exports are fast and VRAM usage is normal. As Camera Raw operations accumulate, VRAM fills up progressively until the system stalls.

Steps to reproduce:

1. Open 20+ CR3 RAW files in Camera Raw
2. Apply a Lightroom preset to all selected photos
3. Apply masks and manual adjustments to individual photos
4. Use Denoise AI or Remove Object on one or more photos
5. Attempt to save/export — saving becomes extremely slow or system freezes
6. Check GPU-Z Sensors: VRAM usage will be at 95-97%, GPU Load at 100%, Bus Interface Load at 100%

What I have already tried:

• Clean GPU driver reinstall using DDU in Safe Mode
• Installed NVIDIA Studio Driver 596.36 (not Game Ready Driver)
• Deleted TempDisableGPU files in %appdata%\Adobe\CameraRaw
• Reset Photoshop preferences
• Updated Camera Raw to 18.3
• Verified GPU is correctly detected in Photoshop Preferences

Temporary workaround:
Restarting Photoshop resets VRAM and restores normal performance temporarily. Using Edit > Purge > All also helps but does not fully resolve the issue.

Note:
The GPU hardware is fully functional. Gaming workloads (tested with Assetto Corsa) run perfectly with no issues. This bug appears specific to Camera Raw's interaction with NVIDIA Blackwell architecture (RTX 50 series). Multiple users with RTX 5060 Ti, RTX 5070 and RTX 5070 Ti report identical behavior on Adobe Community forums.