When Photoshop processes images, it needs to save a lot of intermediate data, which will slow down the computer.

Select the "Edit" menu, move the cursor to "Clean", and a submenu will pop up. As shown in the figure below:

Click the commands such as Restore, Clipboard, History, All and Video Cache in the submenu to release the memory occupied by them and speed up the processing speed of the system.

After cleaning, the project name will be grayed out. Select the "All" command to clear all the contents above.

History and All Commands in the Clean menu not only clean up the history of the current document, but also clean up other documents opened in Photoshop.

If you only want to clean up the current document, you can use the Clear History command in the History panel menu.