Hi @JL13M, Thank you for reaching out, and welcome to the community! I'm sorry to hear about your issue.
Could you please share more details, such as your system information, from Help> System Info> Copy and paste it into a text file and attach it to your response? Is this happening with RAWs from other cameras too? Is it just RAW images that appear grainy, or does this happen with other formats too? Could you please share a sample RAW image as well?
While we wait, you can try the fixes below to see if they work.
1) Turn off GPU acceleration: To check whether problems disappear with the GPU turned off, try turning it off in Photoshop preferences. Go to Photoshop > Preferences > Performance, uncheck Use Graphics Processor, and restart Photoshop.
2) Increase Cache and tile size: Photoshop's cache settings determine how it stores and retrieves image data. Increasing Photoshop's cache to work with for high-resolution files can improve preview rendering. Go to Edit > Preferences > Performance and set Cache Levels to 6 or higher and Cache Tile Size to 1024K.
3) Windows 11 color profile: Right-click on your desktop and select Display settings. Click on Advanced display. Under Display information, you'll see the Color profile. Could you ensure it's set to a standard profile for your monitor? If you've recently calibrated your monitor, there might be an issue with the generated profile. Try reverting to the default sRGB profile to see if that resolves the problem.
Let us know how it goes!
Cheers!
Please be sure to use @ before mentioning my username so that I can be notified as soon as possible, and you can get the help you deserve.
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