What's wrong with the way this page loads images? On the first try I get nothing but grey rectangles, on refresh I get images, on another refresh I get blurred

What's wrong with the way this page loads images? On the first try I get nothing but grey rectangles, on refresh I get images, on another refresh I get blurred image placeholders. Hmm: Loading failed for the <script> with source “https://cdn.optimizely.com/js/16180790160.js”. design-better-data-tables-4ecc99d23356:8:1 -+++++= .+++++= .+@@@@@+ #@@@@*: .@@@@@= *@@@@@ @+@@@@- =#@@@@@ @ +@@@@: :% @@@@@ @ *@@@@-%: @@@@@ @ *@@@@- @@@@@ -@- #@@+ :@@@@@: -#@@@#- ## =@@@@@@@= ....... ......... main.fe894587.chunk.js:1:322280 We're hiring! https://medium.com/jobs-at-medium/work-at-medium-959d1a85284e main.fe894587.chunk.js:1:322536 onmozfullscreenchange is deprecated. media.html:11:9799 onmozfullscreenerror is deprecated. media.html:11:9799 Loading failed for the <script> with source “https://d1z2jf7jlzjs58.cloudfront.net/keys/medium.com/p.js”. design-better-data-tables-4ecc99d23356:1:1 Loading failed for the <script> with source “https://cdn.branch.io/branch-latest.min.js”. design-better-data-tables-4ecc99d23356:1:1 Cross-Origin Request Blocked: The Same Origin Policy disallows reading the remote resource at https://collector-medium.lightstep.com/api/v0/reports. (Reason: CORS request did not succeed). This site appears to use a scroll-linked positioning effect. This may not work well with asynchronous panning; see https://developer.mozilla.org/docs/Mozilla/Performance/ScrollLinkedEffects for further details and to join the discussion on related tools and features! design-better-data-tables-4ecc99d23356 Cross-Origin Request Blocked: The Same Origin Policy disallows reading the remote resource at https://collector-medium.lightstep.com/api/v0/reports. (Reason: CORS request did not succeed). Cross-Origin Request Blocked: The Same Origin Policy disallows reading the remote resource at https://collector-medium.lightstep.com/api/v0/reports. (Reason: CORS request did not succeed).