If your images are uploading slowly or your site loads them slowly, check the size of your images.

For faster loading and speed of your website, we recommend optimizing your photos before uploading.

We are not compressing images on our end, so depending on your website visitors' Internet connection speed, they might experience slower loading times with larger images. It makes no real sense to upload images larger than the screen resolution. You can also imagine that a 10MB image will load much slower and not look better than a well-optimized 2MB image. 

You can optimize the files already when exporting from photoshop or use online tools such as https://compressor.io to optimize files and reduce them up to 90% in size!