Hi there,
Get an optimization plugin that will allow you to exclude specific images from it’s lazyloading as you may need it in the future. (usually, for above the fold images)
WP Rocket has this feature. Also, if I remember it correctly, I think litespeed cache has this as well. There are others but I can’t be sure which one allow this. You’ll have to try each and see what works best for you. 😀
Plugin tip/s: If it works on WordPress default themes, it should normally work with GP. 😀