If you want a fast site, fix your images. Rename files to be descriptive...

https://mega-wiki.win/index.php/ShortPixel_Says_Up_to_80%25_Compression_-_Is_That_Real%3F

If you want a fast site, fix your images. Rename files to be descriptive instead of using generic tags like "IMG_001." Write alt text that actually helps users and search engines understand the context