the problem is generally related to the Lazy Loader.
What plugin are you using to lazy load your images – they generally have an option to exclude images based on a CSS class – you can use this CSS Class: is-logo-image
If you have access to add a CSS class to the specific image you are wanting to exclude, simply add the no-lazy class and it should be ignored when the document is being prepared for lazyloading.
Could you tell me how to apply this class to the logo in GP?