After updating to Photoshop 27.9, all RGB documents appear washed out when GPU acceleration is enabled. Exports are correct. Disabling "Use Graphics Processor" fixes the issue. Photoshop 26.11 on the same Mac does not have this problem.

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Thank you for your help

I am having the exact same issue since the update to 27.9

Moderators, @Mohit Goyal,  please merge this with the following existing post:

Photoshop Update 27.9.0 Washes Out Image Exports | Adobe DME

It is a known issue on the Mac. In Settings go to Technology Previews  and uncheck* ‘Precise color management for HDR display’. *If already unchecked then check it.  Click OK then close and restart Photoshop.


Dave

Summary:

After updating to Photoshop 27.9, all RGB documents appear washed out/desaturated on screen when Use Graphics Processor is enabled. The issue affects both existing files and brand-new RGB documents. The image data is not affected—exported files display correctly in other applications.

System:

MacBook Pro with Apple M3 Max
Built-in Apple XDR Display
Photoshop 27.9
Photoshop 26.11 (2025) installed on the same machine does not exhibit this issue.

Steps to reproduce:

Launch Photoshop 27.9.
Ensure Preferences → Performance → Use Graphics Processor is enabled.
Open any RGB document or create a new RGB document.
Observe that the canvas appears washed out/desaturated.
Disable Use Graphics Processor and restart Photoshop.

Expected result:
The document should display with accurate colors, matching previous Photoshop versions and the exported image.

Actual result:
The canvas appears noticeably washed out. Exported files are correct and display normally in Preview and other applications. Disabling Use Graphics Processor immediately restores the correct on-screen appearance.

Additional troubleshooting performed:

Confirmed Color Settings are default and unchanged.
Tested with brand-new RGB documents.
Toggling GPU Compositing did not resolve the issue.
Proof Colors changes the appearance but is not a workaround.
The problem occurs only in Photoshop 27.9. Photoshop 26.11 on the same Mac, using the same display and color settings, renders correctly with GPU acceleration enabled.