Don't know if anyone else is having this issue with Blackvue HD software. I'm using a new HP 64 bit desktop with Windows 10 and plenty of RAM, but the front camera video is real jerky and lagging. The rear video is fine even while I'm also viewing the front video so I don't get this at all. I also use Registrator Viewer and it works fine, but I haven't figured out how to view both front and back videos simultaneously as on the HD program. Any ideas?