Hi there,
so the image is output using src-set with very loose rules, allowing the browser to choose what it sees as the best size image for the device ( DPR ) and the images display size.
So on my 5k Mac, Chrome i see the full size image and the quality is the same as the original.
In Safari, it initially loads the Medium large image ie. this one:
https://staging.caddymarketing.nl/wp-content/uploads/2022/01/website-vernieuwd-van-tophockey-768×612.webp
So yes that one looks lower quality.
do you want it so only the full image size is loaded ?
As doing that for all images is probably doable but specific images gets tough. Also need to consider the impact that may have on loading time.