Broken Photoshop Windows 10, 10 bit color support

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The Windows 10 April 1803 update has broken Adobe Photoshop 10-bit color support.


I'm using Photoshop v19.1.4 but I rolled back through v19.1.3, v19.1.2, v19.1.1 and v19.1 and it isn't an issue with Photoshop.


I'm using a Dell Precision 7720 using Quadro P4000 card.


Updated quadro p4000 drivers. Didn't fix issue.

I'm using this monitor which is true 10 bit colour: Dell UltraSharp 32 Ultra HD 4K Monitor with PremierColor: UP3216Q | Dell Australia

Test files here:



10 bit test ramp.psd

and

GrayGradientTestImage.png


I can see banding on these images with 10 bit support, banding shouldn't be visible.


I've set 10 bit support in Adobe Photoshop using Edit menu, Preferences, Performance, Advanced Settings. Also check Nvidia Control Panel to see if 10 bit support is turned on.


10 bit color support worked perfectly before installing windows 10 april 1803 update.

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