Hey 👋 We serve images directly from Cloudflare CDN. Therefore, unless the Cloudflare network slows down, this problem should not occur in the images uploaded or proxied by our instance. I guess you are experiencing this problem with images uploaded to different instances and not proxied by us. Since there is no example available, I cannot make a specific guess.
Note: We use Cloudflare only for images and not for the instance itself.