I am currently running a small Nextjs app on the lowest tier in DigitalOcean. When loading my web app, the images take almost 500ms each to render when they are only 1-2 KB. Could a possible reason for the delay be the time it takes to convert the original .png file to .webp? If so, how can I modify next/image to also take both a pre-converted .webp and a .png image and correctly choose between the two in case .webp is not supported on a browser?