We're sorry about the trouble with Photoshop. Would you mind sharing the version of Photoshop you're using along with your computers operating system? Did you start experiencing the issue after an update to Photoshop or to your computers operating system?
You can try try disabling the option to Use Graphics Processor from Photoshop by going to Preferences, then Performance. Once done, quit & relaunch Photoshop to check if that helps.
If the issue persists, you can try to reset the preferences of Photoshop using the steps mentioned here: https://adobe.ly/2Qzc0K3