Looks like my issue is a manifestation of this issue as previously reported:
When images are hosted on LMS, if they aren’t cached on your local CDN node then that CDN has to go to a S3 bucket hosted in the USA rather than a bucket close to the local node. This can introduce lag depending on network contention and distance from the USA S3 bucket.
As such I would like to stop using LMS on danieldurrans.netlify.app (www.danieldurrans.com)