Photos app being ridiculously slow

The title speaks for itself, but how do i determine it is so slow? Well, any other program and even other windows apps open any image withing less than blink of an eye. For example, Paint, Paint 3D, Windows Photo Viewer or Photoshop open any images instantly. Does anyone else have that problem? I would like to continue using Photos app for one reason only - it has full dark interface. This issue came to be either with last update or the one before that.