Weird problem with Photoshop

I have some troubles with my Photoshop-application. As you can see in the pictures, some parts have dissappeared and some won't dissapear. The top beam is gone and also the different 'pages', where you can have multiple pictures. The application also works slow and inaccurate. To solve this, I tried restarting Photoshop and my computer. I have also deleted the app and reinstalled it, but with no succes of fixing my troubles. Restoring the essentials workspace also didn't help.

 

Does someone else also have this problem and if so, how did you fix it? Could someone help me out with this annoying problem? Or does anybody know someone who can?

 

Thank you in advance.