Open Photoshop and go to Help > Updates to open the Creative Cloud app. The first step for fixing recurring problems is to make sure you’re running the latest version of Photoshop. If Photoshop continues to run slow or crash after you restart it, things get a bit trickier. If a different app or system utility has crashed, it can affect how Photoshop runs, but restarting your computer will fix it. Photoshop’s performance is impacted by whatever’s going on in the background. Restarting your computer might also work-especially if a lot of other apps are running in the background or you haven’t restarted in a while. The simplest fix is to just close and reopen the app. If you’ve had Photoshop open for a while, things can just get a bit caught up. All of this can add up to quite a few megabytes.
This includes every file and its history, plus whatever else Photoshop needs to keep things running.
If you’re working with large files or photos, your computer has to store a lot of data in RAM. “Turn it off and back on” is the most common tech support tip for a reason: it often works, and Photoshop is no exception.