In order to get the most performance out of photoshop, you should check out the photoshop preferences. Let’s go ahead and explore the most important settings in the preferences window of photoshop. If you are in a hurry then scroll down and do the stuff that is in Black font in order to increase the performance of Photoshop.
Go ahead and open the preferences window. Windows users should go to Edit > Preferences > General or use the keystroke CTRL+K. Mac users should go to Photoshop > Preferences > General or CMD+K.