The post header image is displaying in substantially lower quality than the actual image. I’ve tried changing the settings I know about and reverted the image to the original uncompressed version but that doesn’t help. Any ideas how to fix this?
Example = https://maplelawnhomes.com/open-home-603-timber/
Fixed the problem. The was due to a Jetpack setting. Once I uncheck the ‘Speed up images and photos’ in Jetpack it fixed all my issues.
With that setting enabled it caused image quality loss / artifacting for all header images, slideshows, and front page images. It appears to be the singular cause of the problem and I didn’t notice any issues being caused by my normal image compression.