use default quality,avif image size too large

[dsyscms]

Original image format is jpg and size is 72k
Use default quality, /unsafe/filters:format(webp)/
output webp size is 40k
Use default quality, /unsafe/filters:format(avif)/
output avif size is 138k
The size of the avif image is twice that of the original image

[liudongmiao]

normally, you can decrease the quality for avif for the same visiual quality.