I figured it out, needed to restart the webserver to pick up the change. Probably something cached it out in nginx, I have caching disable in my browser for testing, but something was holding the value. As for large files, I have modified ubb to accept mp4's, and other video formations, and run them through AWS MediaConvert for streaming transcoding and packaging. All the content is then on S3, which I have as a mounted file system. I have it set for 500mb.