Infuse Pro 4.1 Sluggish and Slow on iPad Mini

Hi I have had infuse pro for quiet some time now, has been working perfectly. After the 4.1 update the video is extremely sluggish. When I’m playing a video if i adjust the brightness or volume using gesture control, videos starts playing sluggish or worse gets stuck. I have to stop and play again for it to work. This happens every time. Is anybody else having these issues. Sent a mail to support but haven’t heard from them for 2 days.