Photoshop freezing

[AMY5C98]

My photoshop has been fine and then now for some reason it keeps crashing when I am starting to use tools to edit a photo! Does anyone know why this is happening or how I can fix it please?

[TheDigitalDog]

Try trashing your Photoshop preferences. Press and hold Alt+Control+Shift (Windows) or Option+Command+Shift (Mac OS) immediately after launching Photoshop. You will be prompted to delete the current settings.

(Mac OS only) Open the Preferences folder in the Library folder*, and drag the Adobe Photoshop CS Settings folder to the Trash.

This action only affects the items found in the preferences dialog box. Numerous program settings are stored in the Adobe Photoshop Preferences file, including general display options, file-saving options, performance options, cursor options, transparency options, type options, and options for plug‑ins and scratch disks. Brushes (and lots of other setting) are not affected by the above instructions for deleting preferences. You may wish to make a screen capture of the settings in the Preferences dialog to reset them prior to deleting of this file.

Also: https://helpx.adobe.com/photoshop/using/preferences.html

*To manually delete Photoshop preferences:
Quit Photoshop.
Navigate to Photoshop's Preferences folder:
macOS: Users/[user name]/Library/Preferences/Adobe Photoshop [version] Settings

Note:
The user Library folder is hidden by default on macOS. To access files in the hidden user Library folder, see How to access hidden user library files.
Drag the entire Adobe Photoshop [Version] Settings folder to the desktop or somewhere safe for a back-up of your settings 

[Chloe_Sunshine]

The peculiar thing is if I restart my iMac and immediately open PS, it's fine. No problem.

But if I close PS and later try to reopen, it crashes. 

The solution is to open it and not close it, but this is new behavior and I would like to know what the problem is.

Has anyone else experienced this or maybe have any ideas?

Many thanks.

[Dsstudio]

Yes I have the exact same problem! It's very frustrating. I tried all the suggestions, unchecked OpenCL, messed with teh preferences, nothing helps.