Not responsive anymore?

You mind sharing your site and your exact shortcode your used?

I just discovered that I at this time not allow maxwith with the new lazyload mode but since this trigger a error I guess you used normal mode. This should be responsive even with maxwidth.

http://nextgenthemes.com/plugins/advanced-responsive-video-embedder/temp-tests/

Its working fine here.

Next version will allow maxwidth with lazyload, thanks for leading me to this unintentionally 😉