I set to Hover and desktop view hover great with slideout and 350ms delay.
On Samsung Galaxy S10e I also get Hover on mobile. I tap the fa-bars, then get my root menu choices, but hovering over these menu items causes auto flyopen to submenu items. Each submenu item requires a tap however.
I also tested back on Desktop with a Firefox browser where I reduced my browser width to 450px. Responsive works with fa-bar now showing, but same effect: hover over menu items gives automatic open without a click, and each submenu item then requires a click.
Our website currently is set to Hover. Could you please test at your end and get back to me? Thanks!