Hi. Here’s what I see: https://cl.ly/2E1B3R09173L
Some of the images are blurry, but most are not.
The Photo View displays the Medium size image by default.
Your Medium size photos may be blurry due to WordPress’ resizing settings. You may benefit from activating a plugin like https://wordpress.org/plugins/force-jpeg-quality/ and then a plugin like https://wordpress.org/plugins/simple-image-sizes/ to customize your media sizes and regenerate all thumbnails at the new 100% quality (both of these plugins are third-party, not guaranteed or supported by us). Please note that if you choose to do this, your media files will likely take up significantly more storage space on your server and be large files to load in the browser, which is why WordPress defaults to resizing images not to 100%.
Please let me know how this goes for you.